What problem does this solve?
If a word is incorrect but quite an obvious typo, it makes sense to either auto correct it or let to user choose to instantly correct it without checking the options. A hotkey makes sense for this.

Proposed Solution
A configurable hotkey to auto accept the most likely correct word of the last incorrect word.

Another option could be a hotkey to accept all most likely correct words instead of just the last one.

Component
[ ] Core engine
[x] Plugin/Extension
[ ] Other: _____

Additional Context
I'm using the Chrome extension currently.