Fix code style of lib/ask.js

Author: riesinger

lib/ask.js

@@ -57,7 +57,7 @@ function prompt (data, key, prompt, done) {
       answers[key].forEach(function (multiChoiceAnswer) {
         data[key][multiChoiceAnswer] = true
       })
-    } else if (typeof answers[key] == "string"){
+    } else if (typeof answers[key] === 'string') {
       data[key] = answers[key].replace(/"/g, '\\"')
     } else {
       data[key] = answers[key]