Bug Report

When using :+1: in markdown the corresponding thumbs up is not rendering.

Steps to reproduce

Add :+1: in markdown and docsify serve docs

What is current behaviour

The string :+1: is displayed as is in the rendered page.

What is the expected behaviour

The emoji for thumbs up( 👍 ) should be shown.

Other relevant information

• Bug does still occur when all/other plugins are disabled?

• Your OS: MacOS Catalina

• Node.js version: v13.3.0

• npm/yarn version: v6.14.4

• Browser version: Chrome v81.0.xxx

• Docsify version: latest at cdn.jsdelivr.net/npm/docsify/lib/docsify.min.js

• Docsify plugins: emoji

Please create a reproducible sandbox

![Sandbox](https://codesandbox.io/s/snowy-cookies-f7ipv?file=/index.html

Mention the docsify version in which this bug was not present (if any)

NA