Update doc links in README to point to the stable doc. #900

Job	Run time
Package library	26s
Tests and coverage (windows-latest, 3.8)	1m 4s
Code style	51s
Tests and coverage (windows-latest, 3.9)	1m 2s
Tests and coverage (windows-latest, 3.10)	1m 2s
Documentation Style Check	12s
Tests and coverage (ubuntu-latest, 3.8)	20s
Tests and coverage (ubuntu-latest, 3.9)	23s
Tests and coverage (ubuntu-latest, 3.10)	21s
Doc build	8m 46s
Build and Smoke tests (windows-latest, 3.8)	1m 1s
Build and Smoke tests (windows-latest, 3.9)	50s
Build and Smoke tests (windows-latest, 3.10)	51s
Build and Smoke tests (ubuntu-latest, 3.8)	18s
Build and Smoke tests (ubuntu-latest, 3.9)	24s
Build and Smoke tests (ubuntu-latest, 3.10)	39s
Deploy development documentation	0s
Release project	0s
Deploy stable documentation	0s
	18m 30s

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