chore: update sponsors (#2366) (#1901)

Author: vuejs-jp-bot

themes/vue/_config.yml

@@ -139,3 +139,6 @@ bronze_sponsors:
   - url: 'https://twitter.com/philipjbasile'
     img: philip_john_basile.gif
     name: Philip John Basile
+  - url: 'https://writersperhour.com/'
+    img: writers_per_hour.jpg
+    name: Writers Per Hour