Updating comment with correct method name.

q.js

@@ -190,7 +190,7 @@ var nextTick =(function () {
         //   `setTimeout`. In this case `setImmediate` is preferred because
         //    it is faster. Browserify's `process.toString()` yields
         //   "[object Object]", while in a real Node environment
-        //   `process.nextTick()` yields "[object process]".
+        //   `process.toString()` yields "[object process]".
         isNodeJS = true;
 
         requestTick = function () {