ci: fix doc generation #108

Job	Run time
Build - check (ubuntu-latest, x86_64-unknown-linux-gnu, gcc-x86-64-linux-gnu, nightly)	40s
Build - clippy (ubuntu-latest, x86_64-unknown-linux-gnu, gcc-x86-64-linux-gnu, nightly)	42s
Build - check (windows-latest, x86_64-pc-windows-msvc, nightly)	2m 29s
Build - clippy (windows-latest, x86_64-pc-windows-msvc, nightly)	2m 51s
	6m 42s

Provide feedback