Fix doc build (#2267) #4318

Job	Run time
Rustfmt	16s
Init	6s
Clippy	1m 15s
Examples (examples/actix_example)	2m 17s
Examples (examples/axum_example)	2m 20s
Unit Test	3m 13s
Examples (examples/basic)	1m 19s
Examples (examples/graphql_example)	2m 36s
Examples (examples/jsonrpsee_example)	2m 30s
Examples (examples/loco_example)	3m 16s
Examples (examples/loco_starter)	3m 20s
Examples (examples/poem_example)	2m 33s
Examples (examples/proxy_gluesql_example)	1m 16s
Examples (examples/rocket_example)	3m 15s
Examples (examples/rocket_okapi_example)	3m 8s
Examples (examples/salvo_example)	2m 34s
Examples (examples/seaography_example)	2m 32s
Examples (examples/tonic_example)	2m 35s
Compile PostgreSQL (tokio, native-tls)	2m 47s
Compile PostgreSQL (tokio, rustls)	2m 51s
Compile MySQL (actix, native-tls)	2m 50s
Compile SQLite (async-std, native-tls)	2m 20s
CLI	0s
Compile MySQL (actix, rustls)	2m 19s
Compile SQLite (async-std, rustls)	2m 20s
Issues Matrix	0s
Issues	0s
Postgres (14, tokio, native-tls)	13s
Postgres (15, tokio, native-tls)	11s
Postgres (16, tokio, native-tls)	12s
MariaDB	1s
MySQL	1s
SQLite	1s
	56m 27s

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