refactor(Context): typo in template

[jbmoelker]

Description of change

htmlSlot was misspelled as htmlSolt. I wanted to fix it to htmlSlot but figured simply html was more accurate as the render method returns an HTML string which is also passed to the set:html prop.

Pull-Request Checklist

• [x] Code is up-to-date with the main branch
• ~~This pull request links relevant issues as Fixes #0000~~ N/A
• ~~Documentation has been updated to reflect this change~~ N/A
• [x] The new commits follow conventions explained in CONTRIBUTING.md