fix(path): Fix file path

Author: lucasssvaz

Diff for: docs/en/contributing.rst

@@ -352,7 +352,7 @@ The ``ci.json`` file is used to specify how the test suite and sketches will han
 
 The ``wifi`` test suite is a good example of how to use the ``ci.json`` file:
 
-.. literalinclude:: ../../../tests/validation/wifi/ci.json
+.. literalinclude:: ../../tests/validation/wifi/ci.json
     :language: json
 
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