## Summary of the Pull Request
`keys` in `keybindings` now accepts a string value. This assumes that you wanted a keychord of size 1. The schema and user docs were properly updated too.
This means that the following keybinding is now accepted in your profiles.json:
```json
{ "command": "copy", "keys": "ctrl+c" }
```
as opposed to...
```json
{ "command": "copy", "keys": [ "ctrl+c" ] }
```
## PR Checklist
* [X] Closes#4713
* [X] CLA signed.
* [X] Tests added/passed
* [X] Requires documentation to be updated
## Validation Steps Performed
- [X] tested the new schema
- [X] added test