Update sandbox.md (Shopify#10186)

Fix the broken sandbox landing page

Should now redirect to
https://polaris.shopify.com/sandbox?code=N4Igxg9gJgpiBcIA8AZGBzAhmAngYUwCcoAdAOwAIKBnGSMqInAMQggBcZCBBMdgSwhlqAXmABtYBXqcy7eBRIgAIv2oBbNdSUUAvgF1d5KgAdC-dU1YcuvAULFSZMOQqUBRAB4mIhdhQAlGB8-HV0jMgA%2BYwpUDGx8IigAOgAJGExYQhiqbHthMXEcqgpgYpLpIVl5RRAAFQ5MABsKAGVmmG0QABpyvV7KEsNigXYmmBEldvGumOjBqiQABQgfADcuPrz%2BDbEAM2baCIrcvh3Mdl8xPsWAIQBXdkvKKDUwJohqe8IYChMmzD8KI3EoANX4MAA7m0OtoFickAB6B5PITzE56PpCPAfWhiAAUAEoKCJIqVwsV0Qi7IIyCg1OwQfxOOpRBInFUXDUlABxQifagwmZhbqlSpyLluEAAORg-mmnTCw3hVERVMWiJW6y4VKRaCwuAIxDSGSyuv1CSNKVadHy6tidRgnnYeCqgLIOr6AE0IPdpJhKPdaDRYRQfiF2ILLjQYL8gXtfJZ8hRMAAjX3%2BHC%2BwjSIOXdRcaiATAIscRCxRU5haFAKEJpOZOOZMDR7mAABYpwXUUMQDY5gQF0WpnDSNsBj1NUW%2BCs4PrUdiYPZ7ZLFJGO52uuTuz2DPXxQ1JZI2s5omJxA2JY3H5OjcaTeqNFoKwW3H6YADWUAgkLISntSCCahszAGB6XnPofiA74QOlTAC0cGggXQe4AUIKVu3GJRRX%2Bb5mnQ2EwmOE5mRgVlChBMoVRODDOilAB5MtCC6AYMQqODfVcWoAFVWmUAASAAGZIBIErCQSob4milABiMSqKoXQWNYyjWJKGjqClIJ2G%2BYQ5NU3J1A47kQAAWh4-iACYAFYhJEvT9MkmT7IxRS%2BmVDEfgYLgAEkWQJEj1GJUlShBeh5zFdTRXY%2B45FFSS9BJCgAoAbhBH5tMISh8XE2JAOA0CGWSXzSJyqh%2BCgMR1OSS4UAgMAOlqyEuAIWgiSI-SKEksRJPa-TsBA6hqH4VN%2BCaZkcBQNMYCaMQAANwShIVOgoBMcz44B1N0WbetU7ExrAd8CSCskwogcZkg%2BdBsvAfb3xgGsAqwpKWUJHaTntVTzwSVoFwOj79K%2B3Afuwd8ipZFbRqaSINthXQ9wvYGDrB0j-s%2Bi0gd%2B0HivUaHorkOHEXRnBEaxllUYRQn92JzHyY1PLoIK%2BdkZxkFCVSqiKXhNUz0pi8rSPW1aXNKn%2BevWkKFvCYlGUDIzjWC57rDYJfEjHQvlTKB7nu-8wPYf7UEK7HIiWTAs0eag9UNsm%2BgNpmjYaBcn1DW4RzwMcyAnS27et%2BEvb1nmidFwXT13QPDzFutJfvaUbD-Vd1xdN0gR3DE6jbX51KViNBSIX5MHl0a03GWsyCaEd%2BD2CgzZzedfDjQVI-Tto21WCvZyo-4A1rHM234dB08IFdfcRBPNwXZPCF1XnLXD4PgTIeGZ%2BIeYehAdh04LagEHEEAPnq8Z4BcEB9G6EBIXK9et-gcRDCAA

### WHY are these changes introduced?

Fixes #0000 <!-- link to issue if one exists -->

<!--
  Context about the problem that’s being addressed.
-->

### WHAT is this pull request doing?

<!--
  Summary of the changes committed.

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      <summary>Summary of your gif(s)</summary>
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<!-- ℹ️ Delete the following for small / trivial changes -->

### How to 🎩

🖥 [Local development
instructions](https://github.com/Shopify/polaris/blob/main/README.md#local-development)
🗒 [General tophatting
guidelines](https://github.com/Shopify/polaris/blob/main/documentation/Tophatting.md)
📄 [Changelog
guidelines](https://github.com/Shopify/polaris/blob/main/.github/CONTRIBUTING.md#changelog)

<!--
  Give as much information as needed to experiment with the component
  in the playground.
-->

<details>
<summary>Copy-paste this code in
<code>playground/Playground.tsx</code>:</summary>

```jsx
import React from 'react';
import {Page} from '../src';

export function Playground() {
  return (
    <Page title="Playground">
      {/* Add the code you want to test in here */}
    </Page>
  );
}
```

</details>

### 🎩 checklist

- [x] Tested on
[mobile](https://github.com/Shopify/polaris/blob/main/documentation/Tophatting.md#cross-browser-testing)
- [x] Tested on [multiple
browsers](https://help.shopify.com/en/manual/shopify-admin/supported-browsers)
- [x] Tested for
[accessibility](https://github.com/Shopify/polaris/blob/main/documentation/Accessibility%20testing.md)
- [x] Updated the component's `README.md` with documentation changes
- [x] [Tophatted
documentation](https://github.com/Shopify/polaris/blob/main/documentation/Tophatting%20documentation.md)
changes in the style guide

Co-authored-by: Kyle Durand <kyledurand@users.noreply.github.com>

Author: m4thieulavoie

.changeset/moody-rocks-move.md

@@ -0,0 +1,5 @@
+---
+'polaris.shopify.com': patch
+---
+
+Fixed landing page for sandbox

polaris.shopify.com/content/tools/sandbox.md

@@ -4,7 +4,7 @@ navTitle: Sandbox
 description: Effortless prototyping with Polaris components.
 order: 5
 icon: SandboxMajor
-url: /sandbox?code=N4Igxg9gJgpiBcIA8BhAhgJygHQHYAJ8BnGSXKTATwDEIIAXGDAQTHoEsJciBeYAbWBlGuevHwByACLsiAW1lEJAXwC6yvIQAOGdnKq0GTVhy58hXEWMkBRAB5aIGevgBKMR85UbcAPk34qJhQAHQAEjBosBj4aGyc3HyC%2BMIwouISACoMaAA2%2BADKeTBK%2BGrK%2BBz0uTA82CBFNUT1-gSEgQAKEI4AbkwB7bHxfXwAZnkkPoOEcRw9aPROfAPTSABCAK70iwRQsmC5EEQbGDD4Wrlo7H4r0-gAauwwAO6Fxc1td0gA9JvbXK07lNplwUIcSHwABQASnwPF8%2BGAymBhEBqxMCQAMrIXOxGHJeAILKI0tYJABxDBHIhvJoqAA0iNS6UkADkYC5GiUVOp8N80YQfl1ekw0T90FhwpFomKJaECqRTDdPoFMjA7PQUJYrrhRbd8ABNCAbFJoAgbEjEd74U6eeg0xbEGBna6jJz6JWxABGxpclGNMTAFsWciYREAmAT6pzRGletAkKD4LgpXSMXRoYgbMAAC1iNKI1ogfRiHFDjK9lBS2bNutyjKc%2BAr%2BqI9DQo1GIRWPzVGq1oh1era4uCIQV8QBASCkrHnqqNTqIGyrfyXJpa1OaAA1lAIM9cC0u%2B4iAGwDBsS39adjydT6y0KHzERrgBzDaXDAZAs1CSMi4nPKfu83j6niMAEkk%2BqEMAkHtF%2BJQZAA8lgYY-jBMxyMaLISAAqgUUgACQAAwhIRhGoSqdwnLkGS2k49rfNGKH0jByjMRR7TQexgxwUQGTuPQJzcORdyDPemFkgAtLhBEAEwAKzEaRwkiYQVE0R4dFEN8pwCRgQlsSprH6uol5pNEACS%2BJQqBciwvCiIwWQLaIjxjJiRsoiMlRFQ8PgNkANwwTpgn4JCaGBEeJ5njiISWWB4WqRguR8N5CVDKeRBPl67C5HilCYmgXowMlwAAAaPC8tIlPgboxPhwA8copUoip%2BACq1SAFK2YCbu1rWBF1cSbrF%2BI1TluS%2BA17zKD8g09SNYF9R1c3DXFciTe5ogzd8K0LetaWzd1vXhT8kU3tFLZ7UthDQoF7HIvq-KTt8cqjoqCSyiOM4JJUeLzvUUiRMMCwwImtHOM0ICZl6UAbKD7VIOe9BLYjMVrb4HRoP6WxED8SNXfqqOXejS55FVa6Vig1a4LWeNo-iCPfEjYovV970TkOr3fcmc61PUrJGAeKpID2mratcg53Jk2ZnDxNoaRDsSnLE8w5YVNRJrguSVuwoz4NjMQtk4Lo0jzMuFNm3S65Q%2BoXGaSYxNm7DPjLGCdsL3yi32rYSxgLNc%2BzyrDlgvggPSID0DLoZEAg-AgIcYDFPAaQgKo4fPOwUCRzH8D8OoQA
+url: /sandbox?code=N4Igxg9gJgpiBcIA8AZGBzAhmAngYUwCcoAdAOwAIKBnGSMqInAMQggBcZCBBMdgSwhlqAXmABtYBXqcy7eBRIgAIv2oBbNdSUUAvgF1d5KgAdC-dU1YcuvAULFSZMOQqUBRAB4mIhdhQAlGB8-HV0jMgA%2BYwpUDGx8IigAOgAJGExYQhiqbHthMXEcqgpgYpLpIVl5RRAAFQ5MABsKAGVmmG0QABpyvV7KEsNigXYmmBEldvGumOjBqiQABQgfADcuPrz%2BDbEAM2baCIrcvh3Mdl8xPsWAIQBXdkvKKDUwJohqe8IYChMmzD8KI3EoANX4MAA7m0OtoFickAB6B5PITzE56PpCPAfWhiAAUAEoKCJIqVwsV0Qi7IIyCg1OwQfxOOpRBInFUXDUlABxQifagwmZhbqlSpyLluEAAORg-mmnTCw3hVERVMWiJW6y4VKRaCwuAIxDSGSyuv1CSNKVadHy6tidRgnnYeCqgLIOr6AE0IPdpJhKPdaDRYRQfiF2ILLjQYL8gXtfJZ8hRMAAjX3%2BHC%2BwjSIOXdRcaiATAIscRCxRU5haFAKEJpOZOOZMDR7mAABYpwXUUMQDY5gQF0WpnDSNsBj1NUW%2BCs4PrUdiYPZ7ZLFJGO52uuTuz2DPXxQ1JZI2s5omJxA2JY3H5OjcaTeqNFoKwW3H6YADWUAgkLISntSCCahszAGB6XnPofiA74QOlTAC0cGggXQe4AUIKVu3GJRRX%2Bb5mnQ2EwmOE5mRgVlChBMoVRODDOilAB5MtCC6AYMQqODfVcWoAFVWmUAASAAGZIBIErCQSob4milABiMSqKoXQWNYyjWJKGjqClIJ2G%2BYQ5NU3J1A47kQAAWh4-iACYAFYhJEvT9MkmT7IxRS%2BmVDEfgYLgAEkWQJEj1GJUlShBeh5zFdTRXY%2B45FFSS9BJCgAoAbhBH5tMISh8XE2JAOA0CGWSXzSJyqh%2BCgMR1OSS4UAgMAOlqyEuAIWgiSI-SKEksRJPa-TsBA6hqH4VN%2BCaZkcBQNMYCaMQAANwShIVOgoBMcz44B1N0WbetU7ExrAd8CSCskwogcZkg%2BdBsvAfb3xgGsAqwpKWUJHaTntVTzwSVoFwOj79K%2B3Afuwd8ipZFbRqaSINthXQ9wvYGDrB0j-s%2Bi0gd%2B0HivUaHorkOHEXRnBEaxllUYRQn92JzHyY1PLoIK%2BdkZxkFCVSqiKXhNUz0pi8rSPW1aXNKn%2BevWkKFvCYlGUDIzjWC57rDYJfEjHQvlTKB7nu-8wPYf7UEK7HIiWTAs0eag9UNsm%2BgNpmjYaBcn1DW4RzwMcyAnS27et%2BEvb1nmidFwXT13QPDzFutJfvaUbD-Vd1xdN0gR3DE6jbX51KViNBSIX5MHl0a03GWsyCaEd%2BD2CgzZzedfDjQVI-Tto21WCvZyo-4A1rHM234dB08IFdfcRBPNwXZPCF1XnLXD4PgTIeGZ%2BIeYehAdh04LagEHEEAPnq8Z4BcEB9G6EBIXK9et-gcRDCAA
 status:
   value: Alpha
   message: This component is in development. There could be breaking changes made to it in a non-major release of Polaris. Please use with caution.