feat(report): add hint link to result HTML

[AirQuick]

To follow up #685 , this pull request adds a hint link (❔) to the upper right of the test result diff table (example). Not a beautiful one, but I hope it works.

[commit-lint]

Features

• report: add hint link (c826398)

Tests

• update expected result of end-to-end test (eb24394)
• update expected xspec-355-result.html (560593d)
• xslt: update expected xspec-778_ws-result.html (5f02a6b)

Contributors

@AirQuick

[galtm]

I viewed sample reports in Chrome, Edge, and Firefox on Windows, with varying browser widths. The new icon looked fine in all cases. I think it will help people who are new to XSpec.

[AirQuick]

Thanks @galtm for the review.
I'm merging this. The unfinished linked page will be tracked in #685.