fix missing `em` tag

[nicolasiscoding]

@shareefalis if you can, take your example in the git issue and add it to the example/ folder's examples as part of this PR. So this way, we can track this for regressions going forward. After, will test and get this out

[shareefalis]

Done. I didn't put too much effort into this btw.

[shareefalis]

@nicolasiscoding Any update on this?

[nicolasiscoding]

@shareefalis on my list of things to knock out this week. My apologies for the delays, this contribution is super appreciated and we are thankful for your help 😄

[nicolasiscoding]

@shareefalis can you shoot us an email when you get the chance

[shareefalis]

What for?

edit: I sent an email from my work email to your gmail email.

[nicolasiscoding]

Unrelated but found during testing - https://github.com/TurboDocx/html-to-docx/issues/47