Normalize the sheet name to fix behavior regression between 2.6.0 & 2.6.1

[jtwatson]

PR Details

Description

normalize the sheet name as is done elsewhere in the code:
sheet = trimSheetName(sheet)

Related Issue

Closes #1365

Motivation and Context

Fixing a behavior regression between 2.6.0 and 2.6.1

How Has This Been Tested

This simple code verifies that it fixes the issue.

package main

import (
	"fmt"

	"github.com/xuri/excelize/v2"
)

func main() {
	spreadsheet := excelize.NewFile()
	defer spreadsheet.Close()

	sheet := "My Sheet: 1"
	spreadsheet.NewSheet(sheet)

	row := []interface{}{"A1", "B1"}

	if err := spreadsheet.SetSheetRow(sheet, "A1", &row); err != nil {
		fmt.Println(err)
	}

	if err := spreadsheet.SaveAs("mytest.xlsx"); err != nil {
		fmt.Println(err)
	}
}

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 #1366 (eec38e8) into master (53a4955) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1366   +/-   ##
=======================================
  Coverage   98.44%   98.44%           
=======================================
  Files          31       31           
  Lines       23434    23435    +1     
=======================================
+ Hits        23070    23071    +1     
  Misses        242      242           
  Partials      122      122           

Flag	Coverage Δ
unittests	98.44% <100.00%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
sheet.go	100.00% <100.00%> (ø)

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[xuri]

LGTM, thanks for your contribution.