[gnome-shell/wip/hadess/gsettings-key-grammar] data: Fix grammar and wording in new GSettings key

[Bastien Nocera <hadess src gnome org>]

commit f3671209019b6eb5a2bdbfa29c293267b485b729
Author: Bastien Nocera <hadess hadess net>
Date:   Fri Feb 5 15:33:00 2021 +0100

    data: Fix grammar and wording in new GSettings key
    
    The description for the 'welcome-dialog-last-shown-version' key
    must have been written quite late in the day, as it's full of grammar
    mistakes, typos and British English.
    *sips coffee*
    I can say that, because I wrote it.
    *sips coffee*
    Anyway, that might be a bit better.
    
    *sips coffee* and Closes: https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1641

 data/org.gnome.shell.gschema.xml.in | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/data/org.gnome.shell.gschema.xml.in b/data/org.gnome.shell.gschema.xml.in
index 55817e8797..b927d099c2 100644
--- a/data/org.gnome.shell.gschema.xml.in
+++ b/data/org.gnome.shell.gschema.xml.in
@@ -96,12 +96,12 @@
     </key>
     <key name="welcome-dialog-last-shown-version" type="s">
       <default>''</default>
-      <summary>The last version the “Welcome to GNOME” dialogue was shown for</summary>
+      <summary>The last version the “Welcome to GNOME” dialog was shown for</summary>
       <description>
-        This key determines when the “Welcome to GNOME” dialog was last shown for.
-        An empty string represents the oldest possible version, and huge number will
-        represents versions that do not exist yet, and should be used to disable the
-        dialogue should that be needed.
+        This key determines for which version the “Welcome to GNOME” dialog was
+        last shown. An empty string represents the oldest possible version, and
+        huge number will represent versions that do not exist yet. This huge
+        number can be used to effectively disable the dialog.
       </description>
     </key>
     <key name="introspect" type="b">