help: Fix gedit open recent page's grammar

help: Fix gramatical syntax within gedit-open-recent.page.

Fixes #349

help/C/gedit-open-recent.page

@@ -23,12 +23,12 @@
   <list type="numbered">
     <item><p>Click the arrow button next to the <gui>Open</gui> button in the
     header bar.</p></item>
-    <item><p><app>gedit</app> will display a menu with the ten most-recently
-    used files.</p></item>
+    <item><p><app>gedit</app> will display a menu with the ten most recently-used 
+    files.</p></item>
     <item><p>Select the desired file, and it will open in a new tab.</p></item>
   </list>
 
-  <note><p>When hovering with the mouse a recently-used file from the menu, the
+  <note><p>When hovering with the mouse over a recently-used file from the menu, the
   full path to the file is displayed in the status bar at the bottom of the
   <app>gedit</app> window.</p></note>