fix(create-turbo): Require specific argument for example option

[islandryu]

Description

When we forgot to add the example argument in create-turbo, example was treated as true.
The error log below makes me a little confused.

vscode ➜ /workspaces $ npx create-turbo -e
Need to install the following packages:
create-turbo@2.1.2
Ok to proceed? (y) 

? Where would you like to create your Turborepo? ./my-turborepo
? Which package manager do you want to use? npm
>>> Could not locate an example named "true". It could be due to the following:
 1. Your spelling of example "true" might be incorrect.
 2. You might not be connected to the internet or you are behind a proxy.

I couldn't find a reason why the example argument is optional, so I'm making it require.

vscode ➜ /workspaces/turborepo (fix/create-turbo) $ ./packages/create-turbo/dist/cli.js -e
error: option '-e, --example <name>|<github-url>' argument missing

Testing Instructions

We can check the changes by running the CLI itself.
Alternatively, if testing is required at the Commander level, I can implement it.

./packages/create-turbo/dist/cli.js -e

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
examples-nonmonorepo	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 16, 2024 0:02am

8 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
examples-basic-web	⬜️ Ignored (Inspect)	Visit Preview		Sep 16, 2024 0:02am
examples-designsystem-docs	⬜️ Ignored (Inspect)	Visit Preview		Sep 16, 2024 0:02am
examples-gatsby-web	⬜️ Ignored (Inspect)	Visit Preview		Sep 16, 2024 0:02am
examples-kitchensink-blog	⬜️ Ignored (Inspect)	Visit Preview		Sep 16, 2024 0:02am
examples-native-web	⬜️ Ignored (Inspect)	Visit Preview		Sep 16, 2024 0:02am
examples-svelte-web	⬜️ Ignored (Inspect)	Visit Preview		Sep 16, 2024 0:02am
examples-tailwind-web	⬜️ Ignored (Inspect)	Visit Preview		Sep 16, 2024 0:02am
examples-vite-web	⬜️ Ignored (Inspect)	Visit Preview		Sep 16, 2024 0:02am

[vercel]

@islandryu is attempting to deploy a commit to the Vercel Team on Vercel.

A member of the Team first needs to authorize it.

[chris-olszewski]

Thanks for the fix!

[ijjk]

Allow CI Workflow Run

• approve CI run for commit: f6efc9d

Note: this should only be enabled once the PR is ready to go and can only be enabled by a maintainer

[ijjk]

Allow CI Workflow Run

• approve CI run for commit: f6efc9d

Note: this should only be enabled once the PR is ready to go and can only be enabled by a maintainer