#1330 update non existing sheet error messages

[davidborry]

PR Details

Update error messages for non existing sheets with proper english sentence

Description

• Change error messages like sheetName is not exist to sheetName does not exist
• Update comments with the same issue as well

Related Issue

#1330

Motivation and Context

Before this change, excelize would return error messages with improper english sentences when trying to access a non existing sheet. Using correct sentences would improve user experience

How Has This Been Tested

All existing tests have been updated to verify the errors messages are up to date

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #1331 (40e71bf) into master (f866738) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1331   +/-   ##
=======================================
  Coverage   98.44%   98.44%           
=======================================
  Files          31       31           
  Lines       23427    23427           
=======================================
  Hits        23063    23063           
  Misses        242      242           
  Partials      122      122           

Flag	Coverage Δ
unittests	98.44% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
styles.go	100.00% <ø> (ø)
errors.go	100.00% <100.00%> (ø)
pivotTable.go	98.72% <100.00%> (ø)
rows.go	97.39% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[xuri]

LGTM, thanks for your contribution.