Lint for eslint-config-scratch@3

src/engine/execute.js

@@ -4,7 +4,7 @@ var Thread = require('./thread');
 /**
  * Utility function to determine if a value is a Promise.
  * @param {*} value Value to check for a Promise.
- * @return {Boolean} True if the value appears to be a Promise.
+ * @return {boolean} True if the value appears to be a Promise.
  */
 var isPromise = function (value) {
     return value && value.then && typeof value.then === 'function';