Add syntax highlighting to Discord Markdown 101

This guide is missing syntax highlighting: https://support.discord.com/hc/en-us/articles/210298617-Markdown-Text-101-Chat-Formatting-Bold-Italic-Underline-

So here's a suggested section for "Code Blocks with Syntax Highlighting"

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CODE BLOCKS

1) Discord also supports code blocks as well.  You can make your own code blocks by wrapping your text in backticks (`)

2) You can also use three backticks (```) to create multiline code blocks, like this beautifully written haiku.

3) If you add a programming language, you can get syntax highlighting for multiline code blocks. Check out all the supported highlighting languages here: https://highlightjs.org/static/demo/