[skip changelog] Replace duplicate content with link to config docs (#780)

The Integration options page is intended to be an overview of the three methods of using Arduino CLI. Low level details are not needed here. Instead, we can provide links to that information on the relevant documentation pages.

Author: per1234

docs/integration-options.md

@@ -38,10 +38,7 @@ package index that can be used to work with experimental versions of cores:
 
 ![configuration methods screenshot][]
 
-One note about the example above: passing a value through a command line flag
-always takes precedence over reading an environment variable, which in turn
-always takes precedence over reading the same value from the configuration file
-(if you have one). For more information, see the [configuration documentation].
+See the [configuration documentation] for details about Arduino CLI's configuration system.
 
 Consistent with the previous paragraph, when it comes to providing output the
 Arduino CLI aims to be user friendly but also slightly verbose, something that