Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: matthiasgoergens

Modules/_collectionsmodule.c

@@ -71,7 +71,7 @@ class dequeobject_converter(self_converter):
 
 /* collections module implementation of a deque() datatype
    Originally written by Raymond D. Hettinger <python@rcn.com>
-   Rewrite as a growable ring buffer by Matthias Goergens <matthias.goergens@gamil.com>
+   Rewrite as a growable ring buffer by Matthias Goergens <matthias.goergens@gmail.com>
 */
 
 struct dequeobject {