[gnome-user-docs] Fix minor typo

[Petr Kovář <pmkovar src gnome org>]

commit 11cabb4b3f8ff6935d2f9149c0c4b592ff32d81c
Author: Yuri Chornoivan <yurchor ukr net>
Date:   Sun Mar 21 18:16:44 2021 +0000

    Fix minor typo

 gnome-help/C/keyboard-key-menu.page | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnome-help/C/keyboard-key-menu.page b/gnome-help/C/keyboard-key-menu.page
index da8697b2..17c46381 100644
--- a/gnome-help/C/keyboard-key-menu.page
+++ b/gnome-help/C/keyboard-key-menu.page
@@ -31,7 +31,7 @@
   <p>The <key>Menu</key> key, also known as the <em>Application</em> key, is a
   key found on some Windows-oriented keyboards. This key is usually on the
   bottom-right of the keyboard, next to the <key>Ctrl</key> key, but it can be
-  placed in a different location by keyboard manufacturers. Its is usually
+  placed in a different location by keyboard manufacturers. It is usually
   depicted as a cursor hovering above a menu:
   <media its:translate="no" type="image" mime="image/svg" src="figures/keyboard-key-menu.svg">
   <key>Menu</key> key icon</media>.</p>