[guide] remove trailing or leading underscores

README.md

@@ -1022,13 +1022,13 @@ Other Style Guides
     }
     inherits(PeekableQueue, Queue);
     PeekableQueue.prototype.peek = function () {
-      return this._queue[0];
+      return this.queue[0];
     };
 
     // good
     class PeekableQueue extends Queue {
       peek() {
-        return this._queue[0];
+        return this.queue[0];
       }
     }
     ```
@@ -1971,7 +1971,7 @@ Other Style Guides
     function getType() {
       console.log('fetching type...');
       // set the default type to 'no type'
-      const type = this._type || 'no type';
+      const type = this.type || 'no type';
 
       return type;
     }
@@ -1981,15 +1981,15 @@ Other Style Guides
       console.log('fetching type...');
 
       // set the default type to 'no type'
-      const type = this._type || 'no type';
+      const type = this.type || 'no type';
 
       return type;
     }
 
     // also good
     function getType() {
       // set the default type to 'no type'
-      const type = this._type || 'no type';
+      const type = this.type || 'no type';
 
       return type;
     }