Update template for custom redirect URI (#7853)

Author: vepatel

internal/configs/oidc/oidc.conf

@@ -24,7 +24,7 @@
         default_type text/plain; # In case we throw an error
     }
 
-    #set $redir_location "/_codexch";
+    #set $redir_location "/_codexch"; check for changes in case location value is changed from /_codexch
     location = /_codexch {
         # This location is called by the IdP after successful authentication
         status_zone "OIDC code exchange";