Update src/timing.js

src/timing.js

@@ -10,6 +10,7 @@ export default function(eruda) {
     constructor() {
       super()
       this.name = 'timing'
+      this.displayName = 'タイミング'
       this._style = evalCss(require('./style.scss'))
       this._performanceTimingData = []
       this._performanceTiming = {}