Job artifact documentation: Added list of textual formats
Job artifact documentation: Added list of textual formats

!22112 added the latest extension to this list, .log meaning
that this doc extension is valid for version >= 11.5

Closes #56801

stoplightio/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,mmkassem/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,mmkassem/gitlabhq,iiet/iiet-git,iiet/iiet-git,mmkassem/gitlabhq