Custom multiple marker execution order (#8065)

* Custom multiple marker execution order

https://github.com/pytest-dev/pytest/issues/8020 issue stated that ordering of multiple custom markers is from inside - out. I have added example for the same in the documentation. Please let me know for further changes / concerns.

* remove trailing spaces

The last commit was failing due to extra spaces

* Ran tox tests locally to debug white space trimming issues

* Resolve: ERROR:   docs: commands failed for tox -e docs

* Update doc/en/reference.rst

Committed PR suggestions.

Co-authored-by: Florian Bruhin <me@the-compiler.org>

* Added reference to Node.iter_markers_with_node in documentation

* Add myself to Authors

Co-authored-by: Shubham <shubham.adep@wsu.edu>
Co-authored-by: Florian Bruhin <me@the-compiler.org>

doc/en/reference.rst

@@ -248,6 +248,16 @@ Will create and attach a :class:`Mark <_pytest.mark.structures.Mark>` object to
     mark.args == (10, "slow")
     mark.kwargs == {"method": "thread"}
 
+Example for using multiple custom markers:
+
+.. code-block:: python
+
+    @pytest.mark.timeout(10, "slow", method="thread")
+    @pytest.mark.slow
+    def test_function():
+        ...
+
+When :meth:`Node.iter_markers <_pytest.nodes.Node.iter_markers>` or :meth:`Node.iter_markers <_pytest.nodes.Node.iter_markers_with_node>` is used with multiple markers, the marker closest to the function will be iterated over first. The above example will result in ``@pytest.mark.slow`` followed by ``@pytest.mark.timeout(...)``.
 
 .. _`fixtures-api`: