Update package descriptions to note the issues with <PackageReference>

[304NotModified]

fixes #3390

[codecov-io]

Codecov Report

Merging #3393 into release/4.6.4 will decrease coverage by <1%.
The diff coverage is n/a.

@@              Coverage Diff               @@
##           release/4.6.4   #3393    +/-   ##
==============================================
- Coverage             80%     80%   -<1%     
==============================================
  Files                357     357            
  Lines              28247   28297    +50     
  Branches            3758    3766     +8     
==============================================
+ Hits               22616   22642    +26     
- Misses              4541    4550     +9     
- Partials            1090    1105    +15

[snakefoot]

Maybe just redirect to the tutorial:

https://github.com/NLog/NLog/wiki/Tutorial

Instead the heavy documents:

https://github.com/NLog/NLog/wiki/Configuration-file
https://github.com/NLog/NLog/wiki/Configuration-API

[304NotModified]

Good point, but IMO the tutorial is on too high level and also references the nlog config package...

[snakefoot]

Maybe the tutorial should not give high recommendation for using NLog.config, but just mention that it exists (and that NLog.config-package only works sometimes, and other times can be a world of hurt).

People deciding whether to use the NLog.config-package are most likely looking for a high-level-introduction.