Blame: and Authorship: Update wikiwho links

[agoujot]

The f-squared link, without or with the www prefix, is now dead (and it doesn't exist anywhere on f-squared anymore).

So, I replaced those links by links to the mediawikiwiki page, which looks like a good user-facing link to me.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.01%. Comparing base (4b8eb28) to head (9bcec6a).
Report is 65 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #496      +/-   ##
============================================
- Coverage     71.30%   71.01%   -0.30%     
- Complexity     1275     1293      +18     
============================================
  Files            46       46              
  Lines          3792     3898     +106     
============================================
+ Hits           2704     2768      +64     
- Misses         1088     1130      +42     

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[agoujot]

Give this only replaced links in the code, I don't know what to make of the above bot message.