template: Added new line at end of file so vi does not throw error.

(From yocto-docs rev: 2b8cd1b912ea4a1725b9060be712828b6c3d2a36)

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

documentation/template/formal.object.heading.xsl

@@ -18,4 +18,4 @@
       </xsl:call-template>
     </p>
   </xsl:template>
-</xsl:stylesheet>
+</xsl:stylesheet>