Normalise the use of "Ex command" in the help files.

--HG--
extra : rebase_source : cff38cc5048c648485bca80031910c1712280b35

common/locale/en-US/autocommands.xml

@@ -49,7 +49,7 @@
         <dl tag="autocommand-list"/>
 
         <p>
-            For ex <oa>cmd</oa>s, the following keywords are
+            For Ex <oa>cmd</oa>s, the following keywords are
             replaced with the appropriate value before the commands
             are executed. For JavaScript commands, they may be
             accessed as ordinary variables, sans angle brackets.

common/locale/en-US/cmdline.xml

@@ -25,7 +25,7 @@
 </p>
 
 <p>
-    Included among the several command-line modes are ex command
+    Included among the several command-line modes are Ex command
     mode (the standard mode for entering commands), find mode (for
     searching the current page), prompt mode (for selecting files,
     confirming actions), and hint mode (for selecting links and
@@ -38,7 +38,7 @@
     <spec>:</spec>
     <description>
         <p>
-            Opens the command-line in ex mode. This is the mode used
+            Opens the command-line in Ex mode. This is the mode used
             for entering the various commands listed in
             <t>ex-cmd-index</t>.
         </p>

common/locale/en-US/developer.xml

@@ -93,7 +93,7 @@
 <dl>
     <dt>Linking</dt><dd/>
     <dt>o</dt>          <dd>Link to an option. (HelpOpt)</dd>
-    <dt>ex</dt>         <dd>Link to an ex command. (HelpEx)</dd>
+    <dt>ex</dt>         <dd>Link to an Ex command. (HelpEx)</dd>
     <dt>k</dt>          <dd>Link to a key. (HelpKey)</dd>
     <dt>&tab;@name</dt> <dd>The name attribute to &lt;k>. When provided, &lt;<a>value</a>> is prepended to
                             the element's contents, i.e., <em>&lt;k name="Tab"/></em> becomes <em><k name="Tab"/></em>.

common/locale/en-US/eval.xml

@@ -13,7 +13,7 @@
 
 <p>
     Much of the power of &dactyl.appName; lies in its scriptable expression
-    evaluation. &dactyl.appName; understands two kinds of expressions: ex
+    evaluation. &dactyl.appName; understands two kinds of expressions: Ex
     commands, and JavaScript. Ex commands are simple, easy to type, and
     readily accessible from the <t>command-line</t>. They form a core part of
     the user interface. JavaScript, on the other hand, is much less
@@ -74,7 +74,7 @@
     <spec>:exe<oa>cute</oa> <a>expr</a></spec>
     <description>
         <p>
-            Execute the ex command string that results from the evaluation of
+            Execute the Ex command string that results from the evaluation of
             the JavaScript expression <a>expr</a>. For example,
         </p>
         <code><ex>:execute "open " + content.location.host</ex></code>