Fix typo in replace.h

[eltociear]

Summary of the Pull Request

Fixed typo.

occurences -> occurrences

References

PR Checklist

• Closes #xxx
• CLA signed. If not, go over here and sign the CLA
• Tests added/passed
• Documentation updated. If checked, please file a pull request on our docs repo and link it here: #xxx
• Schema updated.
• I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

[zadjii-msft]

Huh. This should probably get taken out of dictionary.txt too, since that looks like it's allowing this typo/.

@jsoref as an fyi

[jsoref]

Thanks. I keep running into this but hadn't gotten around to looking under the hood. Added to https://github.com/check-spelling/check-spelling/wiki/Archaic-words

I suspect I'll release a slightly condensed dictionary by this summer.

[DHowett]

Thanks!