Add a missing colon and fix misprint

Author: bocharsky-bw

src/LiveComponent/doc/index.rst

@@ -1087,7 +1087,7 @@ the ``#[LiveArg()]`` attribute::
     }
 
 Normally, the argument name in PHP - e.g. ``$id`` - should match the
-argument named used in Twig ``id={{ item.id }}``. But if they don't
+argument name used in Twig ``id={{ item.id }}``. But if they don't
 match, you can pass an argument to ``LiveArg``, like we did with ``itemName``.
 
 Actions and CSRF Protection
@@ -1153,7 +1153,7 @@ the component now extends ``AbstractController``! That is totally
 allowed, and gives you access to all of your normal controller
 shortcuts. We even added a flash message!
 
-.. _files
+.. _files:
 
 Uploading files
 ---------------