Adjust capitalisation of X-UA-Compatible meta tag

The docs suggest that the capitalised form is correct
2017-03-27 10:00:05 +01:00 · 2017-03-27 10:00:05 +01:00 · af45d509eb
commit af45d509eb
--- a/core/templates/tiddlywiki5.html.tid
+++ b/core/templates/tiddlywiki5.html.tid
@ -4,7 +4,7 @@ title: $:/core/templates/tiddlywiki5.html
 <!doctype html>
 {{$:/core/templates/MOTW.html}}<html>
 <head>
-<meta http-equiv="X-UA-Compatible" content="IE=edge" />		<!-- Force IE standards mode for Intranet and HTA - should be the first meta -->
+<meta http-equiv="X-UA-Compatible" content="IE=Edge">
 <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
 <meta name="application-name" content="TiddlyWiki" />
 <meta name="generator" content="TiddlyWiki" />