[web][docs] Update progressive-web-apps.md

[joshpaulchan]

Escape the bars on the table description to fix the table content.

Why

I saw the content was broken while reading it, so I figured I'd fix it.

How

Haven't tested this yet really, besides GH's rich markdown preview.

Test Plan

• TBD, will follow contributing guidelines

[barthap]

I'm afraid it won't work this way because of this issue mdx-js/mdx#838 😞

It may work by replacing the ` backtick with <code> but it won't be the nicest solution.

To check if it's working, do cd docs && yarn && yarn dev and open http://localhost:3000 in browser.

EDIT: A workaround would be replacing the | character with another one looking the same, see this answer.

[joshpaulchan]

@barthap thanks for letting me know! I hadn't gotten around to testing it but disappointing this wouldn't work. I'm not opposed to migrating the pipe to another character/token since I think that's the simplest solution - any suggestions? or ?

[barthap]

Hi @joshpaulchan,

Please look at #10499 and #10500 if you're still interested.