Wiki/Advanced-Usage: update example output from --config-show

As the PHPCS installation used in GH Actions won't have a `CodeSniffer.conf` file yet, this cannot be automated.
Aside from that, automating this would yield inconsistent results when contributors would run the command output replacement script locally.

Replacing it now with a manually crafted, updated output example.

Author: jrfnl

wiki/Advanced-Usage.md

@@ -324,11 +324,12 @@ To view the currently set configuration options, use the `--config-show` command
 
 ```bash
 $ phpcs --config-show
-Array
-(
-    [default_standard] => PEAR
-    [zend_ca_path] => /path/to/ZendCodeAnalyzer
-)
+
+Using config file: path/to/PHP_CodeSniffer/CodeSniffer.conf
+
+colors:           1
+default_standard: PEAR
+report_width:     150
 ```
 
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