Update function and var names

public/main.js

@@ -4,22 +4,22 @@
     hirakujira: { name: 'Hiraku', avatar: 'bf73e08d8bc1db95b62f02d50f8a03e9' },
     Shawn_N: { name: '$踢低吸 舞勺之年', avatar: '34624582cd585ba65e5b5368c84cb1a2' }
   }
-  const hiraku = await fetch('public/saying.txt')
-  const saying = await hiraku.text()
-  const hirakuSaying = saying.split(';').slice(0, -1).map(x => x.trim())
+  const file = await fetch('public/saying.txt')
+  const text = await file.text()
+  const saying = text.split(';').slice(0, -1).map(x => x.trim())
   new Vue({ // eslint-disable-line no-new
     el: '#app',
     data: {
-      hiraku: hirakuSaying,
+      saying: saying,
       uname: '',
       name: '',
       avatar: 'https://www.gravatar.com/avatar/00000000000000000000000000000000',
       message: ''
     },
     methods: {
-      updateHiraku () {
-        const idx = Math.floor(Math.random() * this.hiraku.length)
-        const saying = this.hiraku[idx].split(',')
+      updateSaying () {
+        const idx = Math.floor(Math.random() * this.saying.length)
+        const saying = this.saying[idx].split(',')
         this.uname = saying[0]
         this.name = gravatar[this.uname].name
         this.avatar = `https://www.gravatar.com/avatar/${gravatar[this.uname].avatar}`
@@ -28,7 +28,7 @@
     },
     created () {
       (function f () {
-        this.updateHiraku()
+        this.updateSaying()
         return setTimeout(f.bind(this), 5000)
       }).bind(this)()
     }