Removed breaking "\r\n" instances from command. (#441)

* Removed breaking "\r\n" instances from command.
* Put back required backslashes

Author: dobooth

docs/commands/mftf.md

@@ -181,7 +181,7 @@ Complex configuration to generate a few non-suite tests, a single test in a suit
 The command that encodes this complex configuration:
 
 ```bash
-vendor/bin/mftf generate:tests --tests "{\r\n\"tests\":[\r\n\"general_test1\",\r\n\"general_test2\",\r\n\"general_test3\"\r\n],\r\n\"suites\":{\r\n\"sample\":[\r\n\"suite_test1\"\r\n],\r\n\"sample2\":null\r\n}\r\n}"
+vendor/bin/mftf generate:tests --tests '{"tests":["general_test1","general_test2","general_test3"],"suites":{"sample":["suite_test1"],"sample2":null}}'
 ```
 
 Note that the strings must be escaped and surrounded in quotes.