add clarification that Spotify URI Redirect is case sensitive (home-assistant#17064)

scyto · frenck · web-flow · commit 6980d90e1df1 · 2021-03-19T21:03:30.000+01:00
Co-authored-by: Franck Nijhof &lt;frenck@frenck.nl&gt;
diff --git a/source/_integrations/spotify.markdown b/source/_integrations/spotify.markdown
@@ -34,6 +34,7 @@ The Spotify media player integration allows you to control [Spotify](https://www
 - Enter the **Edit Settings** dialog of your newly-created application and add a *Redirect URI*:
   - If you are not using SSL: `http://<your_home_assistant_url_or_local_ip>:<port>/auth/external/callback`
   - If you are using SSL: `https://<your_home_assistant_url_or_local_ip>:<port>/auth/external/callback`
+  - Note Spotify does a case-sensitive match of the fields above, as such ensure the Redirect URI is all lower case.
 - Click **Save** after adding the URI.
 
 <div class='note'>
