Fix/vertical padding

[Fernando-hub527]

Description
Consider vertical padding of text when calculating line height

Checklist

check with "x", ONLY IF APPLIED to your change

• All methods associated with structs has func (<first letter of struct> *struct) method() {} name style.
• Wrote unit tests for new/changed features.
• Followed the unit test when,should naming pattern.
• All mocks created with m := mocks.NewConstructor(t).
• All mocks using m.EXPECT().MethodName() method to mock methods.
• Updated docs/doc.go and docs/*
• Updated example_test.go.
• Updated README.md
• New public methods/structs/interfaces has comments upside them explaining they responsibilities
• Executed make dod with none issues pointed out by golangci-lint

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.04%. Comparing base (8a057a1) to head (7addbf0).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #471      +/-   ##
==========================================
+ Coverage   87.04%   87.04%   +0.01%     
==========================================
  Files          61       61              
  Lines        2321     2322       +1     
==========================================
+ Hits         2020     2021       +1     
  Misses        269      269              
  Partials       32       32              

Flag	Coverage Δ
unittests	87.04% <100.00%> (+0.01%)	⬆️

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