Update ScriptSyntax.txt

Author: jessefjxm

ScriptSyntax.txt

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <Language Name="Script" Startblock="Code">
 <FileTypes>
-	<FileType Extension=".txt" Name="Script File"/></FileTypes>
+	<FileType Extension=".js" Name="Script File"/></FileTypes>
 
 	<Block Name="Code" Style="Code" IsMultiline="true">
 		<Scope Start="{" End="}" Style="Scope" Text="{...}" CauseIndent="true" />