Update steps for running Prettier on save in WebStorm (#7978)
* Updated WebStorm configuration
* Minor edits in WebStorm docs
* Removed trailing spaces
* #4320: add paths for the global installation to the WebStorm docs
* Update steps for running Prettier on save in WebStorm
* Update the link for WebStorm on the main page
* fix markdown linting errors, `prettier` → Prettier
Co-authored-by: Ekaterina.Prigara <ekaterina.prigara@MUNIT-289.fritz.box>
Co-authored-by: Georgii Dolzhykov <thorn.mailbox@gmail.com>
