Fix formatting.

Author: Lauragra

docs/spfx/extensions/get-started/build-a-hello-world-extension.md

@@ -61,7 +61,7 @@ You can follow the steps in this article by watching the video on the [SharePoin
     code .
     ```
 
-    >**Note:** Because the SharePoint client-side solution is HTML/TypeScript based, you can use any code editor that supports client-side development to build your extension.
+        >**Note:** Because the SharePoint client-side solution is HTML/TypeScript based, you can use any code editor that supports client-side development to build your extension.
 
     Notice how the default solution structure looks like the solution structure for client-side web parts. This is the basic SharePoint Framework solution structure, with similar configuration options across all solution types.