[Documentation] fix link to edit-post documentation (#12835)

* fix link to edit-post documentation

* Update README.md

* Update README.md

packages/plugins/README.md

@@ -29,7 +29,7 @@ This method takes two arguments:
       or an element (or function returning an element) if you choose to render your own SVG.
     - `render`: A component containing the UI elements to be rendered.
 
-See [the edit-post module documentation](../edit-post/) for available components.
+See [the edit-post module documentation](/packages/edit-post/) for available components.
 
 _Example:_
 {% codetabs %}