[docs] Remove alpha for workflow stable release

[hhunter-ms]

Description

Python docs still showed workflow in alpha. Removed for stable release.

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: dapr/docs#3870

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.03%. Comparing base (bffb749) to head (f8e87e6).
Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #760      +/-   ##
==========================================
- Coverage   86.63%   86.03%   -0.60%     
==========================================
  Files          84       87       +3     
  Lines        4473     4783     +310     
==========================================
+ Hits         3875     4115     +240     
- Misses        598      668      +70     

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