Mention that standard libraries have a version number since 1.11

[felixcremer]

Since julia 1.11 standard libraries have a version number and that should be reflected in the docs or this sentence should be removed.

[IanButterworth]

I think the output of st here should be current i.e. 1.13.

Perhaps the note should say Before 1.11 standard libraries did not have dedicated version numbers?

[felixcremer]

I updated the text with your suggestion.

[felixcremer]

The output of all pkg modes in this page should be updated then.

[IanButterworth]

If this specific example is updated I think we can merge this. Without that it's a bit odd.

Generally we need to update all Pkg output across the docs. (Or set up something automatic) That's a much bigger job.

[felixcremer]

I updated the add and st example to 1.13 and I got confused by the following compat and installation of a certain version examples. If you go through the whole markdown page from top to bottom you get totally different results. this is because we first set the compat version to 0.21.4 and then try to install 0.21.1 and this just doesn't work. I am wondering whether we should be switching these two sections to make it clearer and to be able to go through the whole file and get the same results.