fix(readme): Update recommended setting

[qadzek]

It appears that the syntax for this setting has changed. The current example returns the following error: Incorrect type. Expected "string".

It also might be useful to limit this setting to JSON files.

[zardoy]

It also might be useful to limit this setting to JSON files.

Makes sense, but then, add jsonc language as well so we have [json][jsonc]

[qadzek]

Good idea.

Thanks for this extension. Having to add or remove trailing commas in JSON files was always quite a hassle.

[zardoy]

Sorry, not at home right now but I want to check that setting syntax change, that why it will take some time to merge

[zardoy]

Incorrect type. Expected "string"

Okay, I see. But why do you change the setting value from true to ["source.fixAll"] (which is string[])?

[zardoy]

Ok, I see that the provided format also works, I just expected it to be changed to

"editor.codeActionsOnSave": {
    "source.fixAll": "explicit"
  }

[zardoy]

Thanks for this extension. Having to add or remove trailing commas in JSON files was always quite a hassle.

Thanks, I'm glad someone in the world discovered this one!