Fix emphasis followed by a punctuation

[RomanHotsiy]

Marked version:

0.5.2

Markdown flavor: CommonMark

Description

My previous PR #1351 caused a regression for some emphasis use cases. There is no specific CommonMark test to catch that. @styfle could you suggest me where to put the test for this specific use case so it won't break in the future?

• Fixes 0.5.2 broke some emphasis conversions #1378

Contributor

• Test(s) exist to ensure functionality and minimize regression

Committer

In most cases, this should be a different person than the contributor.

• Draft GitHub release notes have been updated.
• CI is green (no forced merge required).
• Merge PR

[UziTech]

looks good to me if all the tests pass

[UziTech]

@RomanGotsiy you can add a test in https://github.com/markedjs/marked/blob/master/test/specs/marked/marked.json

[RomanHotsiy]

@UziTech Added a few extra tests and fixed lint issue.

[styfle]

This is wonderful, thanks!