[gnome-shell] data: Fix comment in schema

[Florian Müllner <fmuellner src gnome org>]

commit 9f436ce3734b889afcff1880f6fed884196b92c5
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Aug 1 20:03:03 2018 +0200

    data: Fix comment in schema

 data/org.gnome.shell.gschema.xml.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/org.gnome.shell.gschema.xml.in b/data/org.gnome.shell.gschema.xml.in
index 4ec01a427..a7251cd06 100644
--- a/data/org.gnome.shell.gschema.xml.in
+++ b/data/org.gnome.shell.gschema.xml.in
@@ -190,7 +190,7 @@
     </key>
   </schema>
 
-  <!-- unused, change 00_org.gnome.shell.gschema.override instead --!>
+  <!-- unused, change 00_org.gnome.shell.gschema.override instead -->
   <schema id="org.gnome.shell.overrides" path="/org/gnome/shell/overrides/"
          gettext-domain="@GETTEXT_PACKAGE@">
     <key name="attach-modal-dialogs" type="b">