Update umbraco-cloud/set-up/external-login-providers.md

Co-authored-by: sofietoft <[email protected]>

Author: jesp209i

umbraco-cloud/set-up/external-login-providers.md

@@ -128,7 +128,7 @@ Before you move on, take note of the following keys:
 
 * **Client ID** (generated through the steps above)
 * **Client Secret** (generated through the steps above)
-* **Authority URL** https://accounts.google.com
+* **Authority URL** (`https://accounts.google.com`)
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