urlchecker::url_check()

[AshesITR]

! Warning: man/checkstyle_output.Rd:16:7 Moved
\href{http://checkstyle.sourceforge.net/}{Checkstyle} XML format.
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      https://checkstyle.sourceforge.io/
! Warning: README.md:341:48 Moved
For more information see [Sublime Linter Docs](http://sublimelinter.readthedocs.org/en/latest/installation.html#installing-via-pc)
                                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                               http://sublimelinter.readthedocs.io/en/latest/installation.html
! Warning: README.md:358:10 Moved
[Linter](https://github.com/atom-community/linter) for on the fly linting.
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         https://github.com/steelbrain/linter
! Warning: README.md:291:13 Moved
[syntastic](https://github.com/scrooloose/syntastic) for on the fly linting.
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            https://github.com/vim-syntastic/syntastic
! Warning: README.md:334:18 Moved
[Sublime Linter](https://github.com/SublimeLinter/SublimeLinter3) for on the fly linting.
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                 https://github.com/SublimeLinter/SublimeLinter
✖ Error: README.md:372:27 404: Not Found
In VSCode, [vscode-r-lsp](https://marketplace.visualstudio.com/items?itemName=REditorSupport.r-lsp) presents the
                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~