dev-manual: Fixed a couple typos in the Template section.

(From yocto-docs rev: 9285eee037022ed29a0bdc2c9ecc628c63b47e2b)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/dev-manual/dev-manual-common-tasks.xml

@@ -4341,11 +4341,11 @@ Gateways via their Web Interfaces</ulink>"</emphasis>
         <title>Creating a Custom Template Configuration Directory</title>
 
         <para>
-            If you're producing your own customized version
+            If you are producing your own customized version
             of the build system for use by other users, you might
             want to customize the message shown by the setup script or
             you might want to change the template configuration files (i.e.
-            (<filename>local.conf</filename> and
+            <filename>local.conf</filename> and
             <filename>bblayers.conf</filename>) that are created in
             a new build directory.
         </para>