dev-manual: Edits to "Build and Booting the Modified QEMU Kernel Image" section.

(From yocto-docs rev: 7049ca02ba543524c6171c7dcba67863c4d5b2e5)

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

@@ -2284,7 +2284,9 @@
                 <orderedlist>
                     <listitem><para><emphasis>Be sure your build environment is initialized</emphasis>:
                         Your environment should be set up since you previously sourced
-                        the <filename>&OE_INIT_FILE;</filename> script.
+                        the 
+                        <ulink url='&YOCTO_DOCS_REF_URL;#structure-core-script'><filename>&OE_INIT_FILE;</filename></ulink>
+                        script.
                         If it is not, source the script again from <filename>poky</filename>.
                         <literallayout class='monospaced'>
      $ cd ~/poky
@@ -2298,7 +2300,8 @@
      $ bitbake -c cleansstate linux-yocto
                         </literallayout></para>
                         <para><note>Never remove any files by hand from the <filename>tmp/deploy</filename>
-                        directory inside the Build Directory.
+                        directory inside the 
+                        <link linkend='build-directory'>Build Directory</link>.
                         Always use the various BitBake clean tasks to clear out previous
                         build artifacts.
                         </note></para></listitem>