Update lib/elixir/lib/macro.ex

Co-authored-by: Andrea Leopardi <[email protected]>

Author: josevalim

lib/elixir/lib/macro.ex

@@ -165,7 +165,7 @@ defmodule Macro do
 
     * `:indentation` - indentation of a sigil heredoc
 
-    * `:parens` - denote a node was surrounded by parens for grouping.
+    * `:parens` - denotes a node was surrounded by parens for grouping.
       This entry may appear multiple times in the same metadata if
       multiple pairs are used for grouping