Change lxml parser to html.parser

[NotNANtoN]

Description

Really just a small thing: change the usage from lxml to html.parser in Profile, as you said you would do in #43

Fixes #43 #117 (issue)

Checklist

• [ ] I followed the guidelines in our Contributing document
• [x] I added an explanation of my changes
• [ ] I have written new tests for my changes, as applicable
• [ ] I successfully ran tests with my changes locally

Additional notes (optional)