fix broken intradoc links #988

Job	Run time
Test CUDA support	20s
Test aarch64-apple-tvos	2m 42s
Clippy	28s
MSRV (ubuntu-latest)	30s
Rustfmt	13s
MSRV (windows-latest)	43s
Test (stable)	41s
Test (beta)	39s
Test (nightly)	38s
Test (linux32)	2m 1s
Test (macos)	41s
Test (aarch64-ios)	51s
Test (win32)	1m 7s
Test (win64)	2m 13s
Test (mingw32)	1m 24s
Test (mingw64)	1m 26s
Test (windows-2019)	1m 24s
Test (windows-aarch64, windows-latest, stable, aarch64-pc-windows-msvc, --no-run)	1m 37s
	19m 38s

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