fix single line function shorthand operator

Author: joshraphael

src/rascript.js

@@ -28,11 +28,11 @@ function RAScript(hljs) {
             },
             {
                 className: 'operator',
-                begin: /(\|\||\&\&|\=\=|\!\=|\>\=|\<\=)/,
+                begin: /(\|\||\&\&|\=\=|\!\=|\>\=|\<\=|\=\>)/,
             },
             {
                 scope: 'operator',
-                match: /[^\=][\+\-\*\/\%\^\&\^\~\>\<\!\|]/,
+                match: /[\+\-\*\/\%\^\&\^\~\>\<\!\|]/,
             },      
             {
                 begin: [