[kotlin mode]: Fix unsigned long literal token

Author: flofriday

mode/clike/clike.js

@@ -680,7 +680,7 @@ CodeMirror.defineMode("clike", function(config, parserConfig) {
     intendSwitch: false,
     indentStatements: false,
     multiLineStrings: true,
-    number: /^(?:0x[a-f\d_]+|0b[01_]+|(?:[\d_]+(\.\d+)?|\.\d+)(?:e[-+]?[\d_]+)?)(u|ll?|l|f)?/i,
+    number: /^(?:0x[a-f\d_]+|0b[01_]+|(?:[\d_]+(\.\d+)?|\.\d+)(?:e[-+]?[\d_]+)?)(ul?|l|f)?/i,
     blockKeywords: words("catch class do else finally for if where try while enum"),
     defKeywords: words("class val var object interface fun"),
     atoms: words("true false null this"),