1.2.0 or 1.2.1 wording fixes related to config editor

[abetones]

Add this section:

https://appscope.dev/docs/cli-using#dynamic-configuration

Don't forget to link back to this from the config editor itself.

Raw text to work with:

Optionally specify a directory where AppScope should look once per reporting period for a scope.{pid} file that matches a process pid. This provides a mechanism for [configuring AppScope dynamically] in real time.

Each line of the file must contain an environment variable with a desired value. When AppScope finds a file-process match, it applies the environment variables to the running config, then deletes the scope.{pid} file.

We want to use “filesystem” not “file system” so we should have “Filesystem” events and metrics …

https://staging.appscope.dev/docs/schema-reference/