use &hints-root; instead of hardcoding long URL

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11786 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter08/grub.xml

@@ -45,9 +45,9 @@ xorriso -as cdrecord -v dev=/dev/cdrw blank=as_needed grub-img.iso</userinput></
         previous section.  However, LFS can be booted using GRUB2 without such
         an addition. To do this, the UEFI Mode and Secure Boot capabilities in
         the host system's BIOS need to be turned off.  For details, see <ulink
-        url="http://www.linuxfromscratch.org/hints/downloads/files/lfs-uefi.txt">
+        url="&hints-root;lfs-uefi.txt">
         the lfs-uefi.txt hint</ulink> at
-        http://www.linuxfromscratch.org/hints/downloads/files/lfs-uefi.txt.
+        &hints-root;lfs-uefi.txt.
       </para>
     </note>
 

chapter08/kernel.xml

@@ -141,7 +141,7 @@ Kernel hacking  --->
       <para>A fuller description of managing UEFI environments from within LFS
       is covered by the lfs-uefi.txt hint at
       <ulink 
-        url="http://www.linuxfromscratch.org/hints/downloads/files/lfs-uefi.txt"/>.
+        url="&hints-root;lfs-uefi.txt"/>.
       </para>
     </note>