docs: remove duplicate FAQ entries (Homebrew#116327)

Author: SMillerDev

README.md

@@ -50,8 +50,8 @@ If the issue is still not solved, see the guides for common problems:
 * [`Checksum does not match` error](doc/reporting_bugs/checksum_does_not_match_error.md)
 * [`source is not there` error](doc/reporting_bugs/source_is_not_there_error.md)
 * [`wrong number of arguments` error](doc/reporting_bugs/wrong_number_of_arguments_error.md)
-* [App isn’t included in `upgrade`](doc/faq/app_not_upgrading.md)
-* [The app can’t be opened because it is from an unidentified developer](doc/faq/app_cant_be_opened.md)
+* [App isn’t included in `upgrade`](https://docs.brew.sh/FAQ#why-arent-some-apps-included-during-brew-upgrade)
+* [The app can’t be opened because it is from an unidentified developer](https://docs.brew.sh/FAQ#why-cant-i-open-a-mac-app-from-an-unidentified-developer)
 * [My problem isn’t listed](https://github.com/Homebrew/homebrew-cask/issues/new?template=01_bug_report.yml)
 
 ## Requests

USAGE.md

@@ -155,7 +155,7 @@ $ brew install homebrew/cask-fonts/font-symbola
 * `--debug`: output debug information.
 * `--no-binaries`: skip symlinking executable binaries into `/usr/local/bin`.
 * `--require-sha`: abort installation of Cask if no checksum is defined.
-* `--no-quarantine`: [disable Apple’s quarantining](https://github.com/Homebrew/homebrew-cask/blob/HEAD/doc/faq/app_cant_be_opened.md) for the specific app.
+* `--no-quarantine`: [disable Apple’s quarantining](https://docs.brew.sh/FAQ#why-cant-i-open-a-mac-app-from-an-unidentified-developer) for the specific app.
 * `--language=<iso-language>[,<iso-language> ... ]`: changes the language of the Cask to be installed. The first matching language is used, otherwise it uses the default language of the Cask.
 
 You can also modify the default installation locations used when issuing `brew install`:

doc/faq/app_cant_be_opened.md

@@ -1,4 +1,3 @@
 # Contributing
 
-+ [Contributing to the core](development/hacking.md)
 + [Adding a new Cask](development/adding_a_cask.md)