bugfix appveyor build (fails cause of Debug.Assert compare of xshd filename and name inside)

ICSharpCode.AvalonEdit/Highlighting/Resources/MarkDownWithFontSize-Mode.xshd

@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<SyntaxDefinition name="MarkDown-with-FontSize" extensions=".md" xmlns="http://icsharpcode.net/sharpdevelop/syntaxdefinition/2008">
+<SyntaxDefinition name="MarkDownWithFontSize" extensions=".md" xmlns="http://icsharpcode.net/sharpdevelop/syntaxdefinition/2008">
     <Color name="Heading1" foreground="Maroon" fontSize="30" exampleText="# Title #" />
     <Color name="Heading2" foreground="Maroon" fontSize="27" exampleText="# Title #" />
     <Color name="Heading3" foreground="Maroon" fontSize="24" exampleText="# Title #" />

ICSharpCode.AvalonEdit/Highlighting/Resources/Resources.cs

@@ -60,7 +60,7 @@ namespace ICSharpCode.AvalonEdit.Highlighting
 			                                 ".xft;.map;.wsdl;.disco;.ps1xml;.nuspec").Split(';'),
 			                         "XML-Mode.xshd");
 			hlm.RegisterHighlighting("MarkDown", new[] { ".md" }, "MarkDown-Mode.xshd");
-			hlm.RegisterHighlighting("MarkDownWithFontSize", new[] { ".md" }, "MarkDown-with-FontSizeMode.xshd");
+			hlm.RegisterHighlighting("MarkDownWithFontSize", new[] { ".md" }, "MarkDownWithFontSize-Mode.xshd");
 			hlm.RegisterHighlighting("Json", new[] { ".json" }, "Json.xshd");
 		}
 	}