Link to README.md instead of referring to below in INSTALL.md #1161

Job	Run time
vcpkg (windows-2022, 2025.01.13, full, contrib,nonfree,ade,opencl)	17m 18s
vcpkg (ubuntu-24.04, 2025.01.13, full, contrib,nonfree,ade,opencl)	11m 19s
vcpkg (macos-14, 2025.01.13, full, contrib,nonfree,ade,opencl)	6m 55s
vcpkg (windows-2022, 2025.01.13, min, contrib)	15m 57s
bin (windows-2022, 3.4.16)	11m 48s
docs-rs	56s
bin (ubuntu-22.04, 4.5.4)	10m 27s
bin (ubuntu-24.04, 4.6.0)	10m 54s
bin (windows-2022, 4.11.0)	12m 9s
msrv	3m 38s
bin (ubuntu-20.04, 4.2.0)	9m 52s
src (ubuntu-24.04, 5.0.0-alpha, dynamic)	14m 11s
src (ubuntu-22.04, 3.4.20, dynamic)	10m 18s
src (macos-14, 4.11.0, dynamic)	7m 13s
src (macos-13, 3.4.20, dynamic)	16m 1s
bin (macos-14, @4)	10m 34s
src (ubuntu-24.04, 4.11.0, static)	12m 0s
src (ubuntu-24.04, 4.11.0, dynamic)	12m 38s
	3h 14m 8s

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