We need a doc(alias) policy

[m-ou-se]

See also https://rust-lang.zulipchat.com/#narrow/stream/219381-t-libs/topic/doc.20aliases/near/243793287

• Add doc aliases for python and Java collections rust#81989 (comment)
• Add doc aliases for a lot of the C standard library rust#81988 (comment)

[yaahc]

And we have a doc(alias) policy now! rust-lang/std-dev-guide#25

🎉

[joshtriplett]

We now have a doc(alias) policy, closing.