Fix some small idiomatic errors.

--HG--
extra : rebase_source : 7fa58f4b72b46d47b5f2b82ce46d42d4eed03901

common/locale/en-US/buffer.xml

@@ -12,7 +12,7 @@
 <toc start="2"/>
 
 <p>
-    Buffer is a container that holds the given web page, including
+    A buffer is a container that holds the given web page, including
     all of its history and frames. Each tab contains exactly one
     buffer, and for most purposes the two terms are interchangeable.
     See <t>tabs</t> for more.

common/locale/en-US/marks.xml

@@ -70,7 +70,7 @@
         </dl>
 
         <p>
-            If <oa>url</oa> is omitted, URL of the currently loaded web
+            If <oa>url</oa> is omitted, the URL of the currently loaded web
             page is used.
         </p>
 

common/locale/en-US/repeat.xml

@@ -13,7 +13,7 @@
 
 <p>
     &dactyl.appname; can repeat commands in a number of ways, from repeating
-    the last command, recording and playing macros, to saving its state and
+    the last command, to recording and playing macros, to saving its state and
     executing scripts.
 </p>
 
@@ -140,7 +140,7 @@
             page and every chrome document, including all browser windows and
             dialogs. If the same file is sourced more than once, its previous
             rules are cleared before it is applied again. Rules can be
-            restricted to specific documents by enclosing them inside
+            restricted to specific documents by enclosing them in
             <link topic="https://developer.mozilla.org/en/CSS/@-moz-document">@-moz-document</link>
             blocks.
         </p>