Improve log message in case of NonPlatformWheel error

[CaselIT]

The current log message in case a wheel file contains no compiled extension is not very clear regarding that's the issue is.
I've tried to add a clarification that I how will make it clearer for uses to understand what when wrong

(I opened pypa/cibuildwheel#1247 since it was not clear to me that the error meant, I though it was complaining about the file name abi identifier or something similar)

[codecov]

Codecov Report

Base: 92.42% // Head: 92.42% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (fc4c4a9) compared to base (ef280f2).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #393   +/-   ##
=======================================
  Coverage   92.42%   92.42%           
=======================================
  Files          23       23           
  Lines        1267     1268    +1     
  Branches      311      311           
=======================================
+ Hits         1171     1172    +1     
  Misses         55       55           
  Partials       41       41           

Impacted Files	Coverage Δ
src/auditwheel/main_addtag.py	89.47% <100.00%> (ø)
src/auditwheel/main_repair.py	90.62% <100.00%> (ø)
src/auditwheel/main_show.py	82.75% <100.00%> (ø)
src/auditwheel/wheel_abi.py	97.01% <100.00%> (+0.02%)	⬆️

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[CaselIT]

It seems that the fails in the pipeline are not connected to the changes in this PR, but are due to travis ci worker handing

[CaselIT]

I've updated.

I've taken the liberty of creating a constant with the message, since it was used in 3 different places, but I'm not sure if where I placed it is the correct place. I can remove it if you prefer not having it

[mayeut]

thanks @CaselIT !