docs/*.html: Appease W3C Checker to add "charset=utf-8".

llvm-svn: 143348
diff --git a/llvm/docs/LinkTimeOptimization.html b/llvm/docs/LinkTimeOptimization.html
index 52ab1197..c9c78b9 100644
--- a/llvm/docs/LinkTimeOptimization.html
+++ b/llvm/docs/LinkTimeOptimization.html
@@ -2,6 +2,7 @@
                       "http://www.w3.org/TR/html4/strict.dtd">
 <html>
 <head>
+  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  <title>LLVM Link Time Optimization: Design and Implementation</title>
   <link rel="stylesheet" href="llvm.css" type="text/css">
 </head>