fix: address CR comments

- jira: SITES-21286

src/pages/services/aem-universal-editor/api/commons/index.md

@@ -9,6 +9,28 @@ contributors:
 
 Understand the fundamentals required to develop an extension for the Universal Editor.
 
+## Extension Point
+
+Universal editor has an `universal-editor/ui/1` [extension point](https://developer.adobe.com/app-builder/docs/guides/extensions/) that allows you to extend its functionality.
+To declare it to be used by your extension, you need to add the following configuration to your `app.config.yaml` at the
+root of your extension:
+
+```yaml
+extensions:
+  universal-editor/ui/1:
+    $include: src/universal-editor-ui-1/ext.config.yaml
+```
+Here is an example of `ext.config.yaml` file:
+
+```yaml
+operations:
+  view:
+    - type: web
+      impl: index.html
+actions: actions
+web: web-src
+```
+
 ## Extension Registration
 
 Interaction between UI Extension and Universal Editor starts with the initialization process that includes extension's

src/pages/services/aem-universal-editor/api/item-types-renderers/index.md

@@ -86,7 +86,7 @@ export default App
 
 ```js
 export default () => {
-    const [isLoaded, setIsLoaded] = useState(true);
+    const [isLoading, setIsLoading] = useState(true);
     const [connection, setConnection] = useState();
     const [model, setModel] = useState();
     const [value, setValue] = useState();
@@ -112,7 +112,7 @@ export default () => {
             setError(await connection.host.field.getError());
             // get field validation state
             setValidationState(await connection.host.field.getValidationState());
-            setIsLoaded(false);
+            setIsLoading(false);
         };
         init().catch((e) =>
             console.log("Extension got the error during initialization:", e)
@@ -126,7 +126,7 @@ export default () => {
 
     return (
         <Provider theme={lightTheme} colorScheme="light">
-            {!isLoaded ? (
+            {!isLoading ? (
                 <>
                     Content generated by the extension Renderer#{rendererId}
                     <Flex direction="column" gap="size-65" marginBottom="size-100">