documentation/kernel-manual/yocto-project-kernel-manual.xml and yocto-project-kernel-manual-customization.xsl: Renamed files with correct spelling for kernel.

I had to rename these files because I had kernel mis-spelled when I committed
the original manual files.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>

documentation/kernel-manual/yocto-project-kernel-manual-customization.xsl

@@ -0,0 +1,8 @@
+<?xml version='1.0'?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns="http://www.w3.org/1999/xhtml" xmlns:fo="http://www.w3.org/1999/XSL/Format" version="1.0">
+  
+  <xsl:import href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl" />
+
+  <xsl:param name="generate.toc" select="'article nop'"></xsl:param>
+
+</xsl:stylesheet>