Fixes #240. Edge case when dealing with multiple ranges for one parameter of the cron input

[muhammadtalhas]

I discussed the issue in #240

Essentially, if the g flag is removed from the replace function, we make sure to only replace the first instance of the expression to be replaced. This is okay since the while loop will run again if there's other ranges to be converted.

Since the original regex finds the first instance of the range, this replace will only replace the first instance.

Hence, fixes the edge case of replacing an incorrect sub-string, and also will not change the functionality.

[coveralls]

Pull Request Test Coverage Report for Build 362

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 361:	0.0%
Covered Lines:	274
Relevant Lines:	274

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💛 - Coveralls

[merencia]

@muhammadtalhas thanks for your PR and sorry about the delay!