BLFS: Fix Index look due long configuration filenames.

git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/new-xsl@8070 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

blfs.css

@@ -138,12 +138,12 @@ div.toc ul li h3, div.toc ul li h4 {
 }
 
 .item {
-    width: 18.5em;
+    width: 26em;
     float: left;
 }
 
 .indexref {
-    margin-left: 18.5em;
+    margin-left: 26em;
 }
 
 .secitem {