Add functionality to right-click and select properly spelled word in spell-check extension

[nishadhka]

Thank you very much for the notebook-extensions. I am using Jupyter version 4.2.3, the extension is working perfectly. I am raising this issue for a query related to spell check. The spell check does show the misspelled words as red underline however, I can't able to replace the word with correct spelling. My try to make right click on the word ends in showing the option related to the browser. I am using Firefox browser.

[dsblank]

There is no "right-click and replace" functionality for this yet. But that would be great if there were!