Clarify output in Chapter 6 adjusting section

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10826 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/adjusting.xml

@@ -79,7 +79,8 @@ readelf -l a.out | grep ': /lib'</userinput></screen>
 
 <screen os="j"><userinput>grep 'SEARCH.*/usr/lib' dummy.log |sed 's|; |\n|g'</userinput></screen>
 
-  <para os="k">The output of the last command should be:</para>
+  <para os="k">References to paths that have components with '-linux-gnu' should
+  be ignored, but otherwise the output of the last command should be:</para>
 
 <screen><computeroutput>SEARCH_DIR("/usr/lib")
 SEARCH_DIR("/lib");</computeroutput></screen>