📝 Add google sheets callback URL instruction

Closes #286

apps/docs/docs/self-hosting/configuration/builder.mdx

@@ -53,10 +53,14 @@ Used for Google Fonts (Optional):
 
 https://console.developers.google.com/apis/credentials
 
-The "Authorized redirect URIs" used when creating the credentials must include your full domain and end in the callback path. For example,
+The "Authorized redirect URIs" used when creating the credentials must include your full domain and end in the callback path:
 
-- For production: https://{YOUR_DOMAIN}/api/auth/callback/google
-- For development: http://localhost:3000/api/auth/callback/google
+- For production:
+  - https://{YOUR_DOMAIN}/api/auth/callback/google
+  - https://{YOUR_DOMAIN}/api/credentials/google-sheets/callback
+- For development:
+  - http://localhost:3000/api/auth/callback/google
+  - http://localhost:3000/api/credentials/google-sheets/callback
 
 ## GitHub (Auth)
 

apps/docs/docs/self-hosting/configuration/viewer.mdx

@@ -41,10 +41,10 @@ Used when executing a Google Sheets block. Make sure to set the required scopes
 
 https://console.developers.google.com/apis/credentials
 
-The "Authorized redirect URIs" used when creating the credentials must include your full domain and end in the callback path. For example,
+The "Authorized redirect URIs" used when creating the credentials must include your full domain and end in the callback path:
 
-- For production: https://{YOUR_DOMAIN}/api/auth/callback/google
-- For development: http://localhost:3000/api/auth/callback/google
+- For production: https://{YOUR_DOMAIN}/api/credentials/google-sheets/callback
+- For development: http://localhost:3000/api/credentials/google-sheets/callback
 
 ## S3 Storage (File upload input)