doc: enable necessary features when building docs #250

Job	Run time
run with leak saniziter	2m 59s
check build with madsim	1m 53s
run with single worker thread and deadlock detection	3m 4s
run with address saniziter	2m 59s
misc check	7s
rust doc test (ubuntu-latest)	2m 1s
rust ffmt check (ubuntu-latest)	12s
rust doc test (macos-latest)	1m 31s
rust test with codecov (ubuntu-latest, stable)	2m 57s
rust ffmt check (macos-latest)	14s
rust doc test (windows-latest)	2m 7s
rust test with codecov (ubuntu-latest, 1.81.0)	2m 58s
rust udeps test (ubuntu-latest)	2m 56s
rust ffmt check (windows-latest)	29s
rust test with codecov (macos-latest, stable)	3m 1s
rust udeps test (macos-latest)	2m 58s
rust test with codecov (macos-latest, 1.81.0)	2m 55s
rust udeps test (windows-latest)	2m 23s
rust test with codecov (windows-latest, stable)	2m 44s
rust test with codecov (windows-latest, 1.81.0)	2m 43s
	43m 11s

Provide feedback