[docs] Update HTML pages to refer to CSS in a way that works locally and with Sphinx.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155153 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/GetElementPtr.html b/docs/GetElementPtr.html
index 6af95f5..bddb1d6 100644
--- a/docs/GetElementPtr.html
+++ b/docs/GetElementPtr.html
@@ -4,7 +4,7 @@
 <head>
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
   <title>The Often Misunderstood GEP Instruction</title>
-  <link rel="stylesheet" href="llvm.css" type="text/css">
+  <link rel="stylesheet" href="_static/llvm.css" type="text/css">
   <style type="text/css">
     TABLE   { text-align: left; border: 1px solid black; border-collapse: collapse; margin: 0 0 0 0; }
   </style>