doc: fix some links on the index page (and some small other fixes)

13 jobs for branch/default in 40 minutes and 44 seconds (queued for 9 seconds)
Status Job ID Name Coverage
  Lint
passed lint_doc #100713

00:02:21

passed lint_doc8 #100712

00:00:55

passed lint_manifest #100711

00:00:47

passed lint_py #100710

00:00:50

 
  Tests
failed py3-from-forge-misc #100719
allowed to fail

00:01:45

failed py3-from-forge-server #100717
allowed to fail

00:01:27

failed py3-from-forge-web #100718
allowed to fail

00:01:39

passed py3_misc #100716

00:14:28

passed py3_server #100714

00:34:32

passed py3_web #100715

00:09:27

 
  After Tests
passed trigger-readthedocs #100720

00:00:33

 
  Qa
passed sonarqube #100721

00:02:35

 
  Deploy
failed pages #100722

00:00:37

 
Name Stage Failure
failed
pages Deploy
No job log
failed
py3-from-forge-misc Tests
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failed
py3-from-forge-web Tests
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failed
py3-from-forge-server Tests
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