docs(values) email.incoming is a single key

values.yaml

@@ -477,8 +477,7 @@ gitea:
     mailer: {}
 
     ## @param gitea.config.email.incoming Configuration for handling incoming mail (disabled by default)
-    email:
-      incoming: {}
+    email.incoming: {}
 
     ## @param gitea.config.cache Cache configuration
     cache: {}