docs: Use readthedocs versioning. Closes #1518

[kostis-codefresh]

Signed-off-by: Kostis Kapelonis [email protected]

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this is a chore.
• The title of the PR is (a) conventional, (b) states what changed, and (c) suffixes the related issues number. E.g. "fix(controller): Updates such and such. Fixes #1234".
• I've signed my commits with DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My builds are green. Try syncing with master if they are not.
• My organization is added to USERS.md.

See how it looks at https://argo-rollouts.readthedocs.io/en/doc-versioning/

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
2 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #1671 (3472150) into master (47d59fa) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1671   +/-   ##
=======================================
  Coverage   81.99%   81.99%           
=======================================
  Files         116      116           
  Lines       15929    15929           
=======================================
  Hits        13061    13061           
  Misses       2198     2198           
  Partials      670      670           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 47d59fa...3472150. Read the comment docs.