minor #14780 [Yaml] Adds chapters for YAML lint --exclude option (christingruber)

This PR was merged into the 5.4 branch.

Discussion
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[Yaml] Adds chapters for YAML lint --exclude option

Adds the new chapters for the yaml lint ``--exclude`` and ``--config`` options.

See the feature pull: symfony/symfony#39641

Commits
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9b0fe51 Add the docs for the new --exclude option

Author: javiereguiluz

components/yaml.rst

@@ -433,6 +433,12 @@ Then, execute the script for validating contents:
     # or contents passed to STDIN
     $ cat path/to/file.yaml | php lint.php
 
+Use the `--exclude` option to exclude one or more specific files from multiple file list:
+
+.. code-block:: terminal
+
+    $ php lint.php path/to/directory --exclude=path/to/directory/foo.yaml --exclude=path/to/directory/bar.yaml
+
 The result is written to STDOUT and uses a plain text format by default.
 Add the ``--format`` option to get the output in JSON format: