Update google-sheets-v1.md

Add a note about [the file not found error that occurs when attempting to load a Google Sheet from a shared drive](singer-io/tap-google-sheets#7).

_saas-integrations/google-sheets/v1/google-sheets-v1.md

@@ -99,7 +99,7 @@ setup-steps:
     content: |
       1. Go to [{{ integration.display_name }}](http://sheets.google.com){:target="new"} and log into the Google account associated with the spreadsheet you are looking to integrate.
       2. Open the spreadsheet that you want to use in the integration.
-      3. Your Spreadsheet ID is within the URL to the webpage. In the image below, the portion of the URL within the blue box is the Spreadsheet ID. Keep this readily available to continue with the integration.
+      3. Your Spreadsheet ID is within the URL to the webpage. In the image below, the portion of the URL within the blue box is the Spreadsheet ID. Keep this readily available to continue with the integration. ([Note that the file should be stored in "My Drive" and not a shared drive, or you will see a "File Not Found" error.](https://github.com/singer-io/tap-google-sheets/issues/7))
       {% include layout/image.html file="/integrations/google-sheets-spreadsheet-id.png" alt="Google Sheets URL containing the Spreadsheet ID." enlarge=true max-width="850" %}
   - title: "add integration"
     content: |