Apply suggestions from code review

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Co-authored-by: Petr Viktorin <encukou@gmail.com>

Author: 3 people

Doc/c-api/arg.rst

@@ -506,7 +506,7 @@ API Functions
 
 .. c:function:: int PyArg_Parse(PyObject *args, const char *format, ...)
 
-   Parse the argument of a function that takes a single positional parameter
+   Parse the argument of a function that takes a single positional argument
    into a local variable.  Returns true on success; on failure, it returns
    false and raises the appropriate exception.
 

Doc/library/ast.rst

@@ -1938,8 +1938,8 @@ Function and class definitions
    * ``kw_defaults`` is a list of default values for keyword-only parameters. If
      one is ``None``, the corresponding argument is required.
    * ``defaults`` is a list of default values for positional-only and
-     keyword-or-positional parameter.
-     If there are fewer defaults, they correspond to the last n
+     keyword-or-positional parameters.
+     If there are fewer defaults, they correspond to the last *n*
      parameters.
 
 

Doc/library/shutil.rst

@@ -712,7 +712,7 @@ provided.  They rely on the :mod:`zipfile` and :mod:`tarfile` modules.
    registered for that extension.  In case none is found,
    a :exc:`ValueError` is raised.
 
-   The keyword *filter* argument is passed to the underlying unpacking
+   The keyword argument *filter* is passed to the underlying unpacking
    function. For zip files, *filter* is not accepted.
    For tar files, it is recommended to use ``'data'`` (default since Python
    3.14), unless using features specific to tar and UNIX-like filesystems.