Update: @amplication/plugin-formatter-prettier README

[dericksozo]

The current version of the README instructs users to add formatting rules to .prettierrc. That's a non-existent file. Instead, it should instruct users to add rules to plugin settings as an object that is the same as a Prettier configuration object.

[dericksozo]

CC @GreenMachine01

[GreenMachine01]

@overbit Cant we just add the default rules to the plugin settings?

[overbit]

It makes sense. The rules should already be in the plugin settings defaults. I'll check @GreenMachine01