[metacity] Slightly improve grammar in the new gschema file

[Piotr Drąg <piotrdrag src gnome org>]

commit 20b5f57b54e36124daed2b9da895c86ab7d84c50
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Tue Feb 23 19:39:45 2016 +0100

    Slightly improve grammar in the new gschema file

 data/schemas/org.gnome.metacity.theme.gschema.xml |   14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)
---
diff --git a/data/schemas/org.gnome.metacity.theme.gschema.xml 
b/data/schemas/org.gnome.metacity.theme.gschema.xml
index b248c47..d27c522 100644
--- a/data/schemas/org.gnome.metacity.theme.gschema.xml
+++ b/data/schemas/org.gnome.metacity.theme.gschema.xml
@@ -10,9 +10,9 @@
       <default>''</default>
       <summary>Theme Name</summary>
       <description>
-        This setting is only used if Metacity is selected as theme type. You
-        MUST provide valid Metacity theme name, otherwise Metacity will fall
-        back to default GTK+ theme - Adwaita.
+        This setting is only used if Metacity is selected as the theme type.
+        You MUST provide a valid Metacity theme name, otherwise Metacity will
+        fall back to the default GTK+ theme - Adwaita.
       </description>
     </key>
 
@@ -23,12 +23,12 @@
         Metacity supports two theme types - GTK+ (gtk.css) and Metacity
         (metacity-theme-x.xml).
 
-        GTK+ theme: all data is loaded from CSS. This is same theme that is
-        used by mutter for server side decorations and by GTK+ for client side
+        GTK+ theme: all data is loaded from CSS. This is the same theme that is
+        used by Mutter for server-side decorations and by GTK+ for client-side
         decorations.
 
-        Metacity theme: data is loaded from metacity-theme-x.xml and css. Using
-        this theme type you MUST provide valid theme name.
+        Metacity theme: data is loaded from metacity-theme-x.xml and CSS. When
+        using this theme type you MUST provide a valid theme name.
       </description>
     </key>