[7.2.x] Include `pyproject.toml` in help section that lists out config files with ini-options (#10808)

Co-authored-by: Stefanie Molin <24376333+stefmolin@users.noreply.github.com>

AUTHORS

@@ -327,6 +327,7 @@ Srinivas Reddy Thatiparthy
 Stefan Farmbauer
 Stefan Scherfke
 Stefan Zimmermann
+Stefanie Molin
 Stefano Taschini
 Steffen Allner
 Stephan Obermann

doc/en/reference/reference.rst

@@ -1961,7 +1961,7 @@ All the command-line flags can be obtained by running ``pytest --help``::
                             Auto-indent multiline messages passed to the logging
                             module. Accepts true|on, false|off or an integer.
 
-    [pytest] ini-options in the first pytest.ini|tox.ini|setup.cfg file found:
+    [pytest] ini-options in the first pytest.ini|tox.ini|setup.cfg|pyproject.toml file found:
 
       markers (linelist):   Markers for test functions
       empty_parameter_set_mark (string):

src/_pytest/helpconfig.py

@@ -164,7 +164,8 @@ def showhelp(config: Config) -> None:
     tw.write(config._parser.optparser.format_help())
     tw.line()
     tw.line(
-        "[pytest] ini-options in the first pytest.ini|tox.ini|setup.cfg file found:"
+        "[pytest] ini-options in the first "
+        "pytest.ini|tox.ini|setup.cfg|pyproject.toml file found:"
     )
     tw.line()