Fixclipboarderror

[bjornasm]

on_text_area_clipboard_error is linking to https://harlequin.sh/docs/troubleshooting#copying-and-pasting but that link is dead, and https://harlequin.sh/docs/troubleshooting/copying-and-pasting is correct.

Closes (#509) (an existing open issue)

What are the key elements of this solution? Switched to the correct link.

Why did you design your solution this way? Did you assess any alternatives? Are there tradeoffs? Not appliccable.

Does this PR require a change to Harlequin's docs?

• [x] No.
• [ ] Yes, and I have opened a PR at tconbeer/harlequin-web.
• [ ] Yes; I haven't opened a PR, but the gist of the change is: ...

Did you add or update tests for this change?

• [ ] Yes.
• [x] No, I believe tests aren't necessary.
• [ ] No, I need help with testing this change.

Please complete the following checklist:

• [x] I have added an entry to CHANGELOG.md, under the [Unreleased] section heading. That entry references the issue closed by this PR.
• [x] I acknowledge Harlequin's MIT license. I do not own my contribution.