Improve documentation readme about migration

[ArturAssisComp]

Connection with issue(s)

Close #???

Connected to #???

Solution description

Screenshots or Videos

To Do

• Read contributing guide
• Check the original issue to confirm it is fully satisfied
• Add solution description to help guide reviewers
• Add unit test to verify new or fixed behaviour
• If apply, add documentation to code properties and package readme

[ArturAssisComp]

@deandreamatias I created this PR to do the item 2

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 98.74%. Comparing base (1834d8e) to head (d5c5ceb).
Report is 1 commits behind head on refactor_2024_11.

Files with missing lines	Patch %	Lines
lib/src/validators/string_validators.dart	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                Coverage Diff                @@
##           refactor_2024_11     #146   +/-   ##
=================================================
  Coverage             98.74%   98.74%           
=================================================
  Files                   111      111           
  Lines                  1510     1510           
=================================================
  Hits                   1491     1491           
  Misses                   19       19           

Flag	Coverage Δ
unittests	98.74% <66.66%> (ø)

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