Escape placeholder syntax to show parentheses in an example

[mrnossiom]

Hi 👋🏻,

I would like to be able to escape the placeholder syntax, in this case we want to be able to show these parentheses to the end user.

tldr/pages/linux/playerctl.md

Line 32 in fb7c5c3

`playerctl metadata --format "Now playing: {{artist}} - {{album}} - {{title}}"`

I found a case where someone tried...

tldr/pages/common/fakedata.md

Line 24 in 16d7f93

`echo "{{\{\{Generator\}\}}}" | fakedata`

...but it does not work

Is there a way to escape this syntax ? I can submit 2 PRs to fix these examples

[SethFalco]

Closing this as a duplicate in favor of #10125