Medium 主题：调整Fontawesome

themes/Medium/components/CategoryGroup.js

@@ -1,5 +1,3 @@
-import { faTh } from '@fortawesome/free-solid-svg-icons'
-import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
 import React from 'react'
 import CategoryItem from './CategoryItem'
 
@@ -8,7 +6,7 @@ const CategoryGroup = ({ currentCategory, categories }) => {
     return <></>
   }
   return <div id='category-list' className='pt-4'>
-    <div className='mb-2'><FontAwesomeIcon icon={faTh} className='mr-2' />分类</div>
+    <div className='mb-2'><i className='mr-2 fas fa-th' />分类</div>
     <div className='flex flex-wrap'>
       {Object.keys(categories).map(category => {
         const selected = currentCategory === category