Restore the sed command in check

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11696 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/check.xml

@@ -58,7 +58,9 @@
 
     <para>Install the package and fix a script:</para>
 
-    <screen><userinput remap="install">make docdir=/usr/share/doc/check-&check-version; install</userinput></screen>
+    <screen><userinput remap="install">make docdir=/usr/share/doc/check-&check-version; install &amp;&amp;
+sed -i '1 s/tools/usr/' /usr/bin/checkmk</userinput></screen>
+<!-- Removes a hardcoded call to /tools/bin/gawk at line 1 of checkmk. -->
 
   </sect2>