Menu and table docs improvements

[ppizarror]

No description provided.

[codecov]

Codecov Report

Merging #320 (10bff8f) into master (d29b004) will increase coverage by 0.00%.
The diff coverage is 92.30%.

@@           Coverage Diff           @@
##           master     #320   +/-   ##
=======================================
  Coverage   94.68%   94.68%           
=======================================
  Files          45       45           
  Lines       10625    10626    +1     
=======================================
+ Hits        10060    10061    +1     
  Misses        565      565           

Impacted Files	Coverage Δ
pygame_menu/widgets/widget/table.py	98.39% <ø> (ø)
pygame_menu/menu.py	94.35% <92.30%> (+<0.01%)	⬆️

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