fix: correct docs path for references #1082

Job	Run time
clippy-codegen	26s
format	20s
test (async-std-surf)	3m 43s
clippy (async-std-surf)	51s
test (tokio-hyper)	4m 11s
verify-codegen	58s
clippy (tokio-hyper)	51s
test (tokio-hyper-rustls)	3m 46s
clippy (tokio-hyper-rustls)	1m 0s
test (tokio-hyper-rustls-webpki)	3m 35s
clippy (tokio-hyper-rustls-webpki)	1m 12s
test (blocking)	4m 7s
clippy (blocking)	55s
clippy (blocking-rustls)	1m 3s
test (blocking-rustls)	4m 11s
test (blocking-rustls-webpki)	3m 32s
clippy (blocking-rustls-webpki)	48s
	35m 29s

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