Add missing step in documentation on deleting a wiki page

doc/user/project/wiki/index.md

@@ -127,6 +127,7 @@ You need the [Maintainer role](../../permissions.md) or higher to delete a wiki
 
 1. Go to your project or group and select **Wiki**.
 1. Go to the page you want to delete.
+1. Select the edit icon (**{pencil}**).
 1. Select **Delete page**.
 1. Confirm the deletion.