Fix documentation grammar, typos, and clarity issues

- Fix typo: "becauset" → "because" in interfaces.rst
- Fix grammar: "help installer" → "help installers" in index.rst
- Fix phrase: "Most of the times" → "Most of the time" in quickstart.rst
- Fix capitalization: "python" → "Python" in quickstart.rst
- Fix word order: "that not necessarily should be" → "that should not necessarily be" in quickstart.rst
- Fix grammar: "content type is used" → "content type used" in keywords.rst
- Fix duplicate word: "are are" → "are" in easy_install.rst
- Fix subject-verb: "aggregate" → "aggregates" in pyproject_config.rst
- Fix plural: "practice" → "practices" in deprecated/index.rst
- Fix glob pattern: "AUTHORS**" → "AUTHORS*" in miscellaneous.rst

Co-authored-by: DimitriPapadopoulos <3234522+DimitriPapadopoulos@users.noreply.github.com>

Author: Copilot

docs/deprecated/easy_install.rst

@@ -42,7 +42,7 @@ You will need at least Python 3.5 or 2.7.  An ``easy_install`` script will be
 installed in the normal location for Python scripts on your platform.
 
 Note that the instructions on the setuptools PyPI page assume that you are
-are installing to Python's primary ``site-packages`` directory.  If this is
+installing to Python's primary ``site-packages`` directory.  If this is
 not the case, you should consult the section below on `Custom Installation
 Locations`_ before installing.  (And, on Windows, you should not use the
 ``.exe`` installer when installing to an alternate location.)

docs/deprecated/index.rst

@@ -3,7 +3,7 @@ Guides on backward compatibility & deprecated practice
 ======================================================
 
 ``Setuptools`` has undergone tremendous changes since its first debut. As its
-development continues to roll forward, many of the practice and mechanisms it
+development continues to roll forward, many of the practices and mechanisms it
 had established are now considered deprecated. But they still remain relevant
 as a plethora of libraries continue to depend on them. Many people also find
 it necessary to equip themselves with the knowledge to better support backward

docs/references/keywords.rst

@@ -54,7 +54,7 @@ extensions).
 .. _keyword/long_description_content_type:
 
 ``long_description_content_type``
-    A string specifying the content type is used for the ``long_description``
+    A string specifying the content type used for the ``long_description``
     (e.g. ``text/markdown``)
 
 .. _keyword/author:

docs/userguide/index.rst

@@ -6,7 +6,7 @@ The first step towards sharing a Python library or program is to build a
 distribution package [#package-overload]_. This includes adding a set of
 additional files containing metadata and configuration to not only instruct
 ``setuptools`` on how the distribution should be built but also
-to help installer (such as :pypi:`pip`) during the installation process.
+to help installers (such as :pypi:`pip`) during the installation process.
 
 This document contains information to help Python developers through this
 process. Please check the :doc:`/userguide/quickstart` for an overview of

docs/userguide/interfaces.rst

@@ -54,7 +54,7 @@ carefully attempt to find alternatives before resorting to unscheduled removals.
    In the context of ``setuptools``, the introduction of :py:mod:`warnings`
    (including deprecation warnings) is not considered a breaking change *per se*.
    Instead it is considered a backwards compatible *communication action* that
-   precedes an upcoming breaking change. This is becauset code
+   precedes an upcoming breaking change. This is because code
    containing warnings typically does not fail and can successfully terminate
    execution, unless users explicitly opt into transforming those warnings
    into errors (e.g., via Python's :external+python:ref:`-W option or

docs/userguide/miscellaneous.rst

@@ -24,7 +24,7 @@ files are included in a source distribution by default:
   in ``pyproject.toml`` and/or equivalent in ``setup.cfg``/``setup.py``;
   note that if you don't explicitly set this parameter, ``setuptools``
   will include any files that match the following glob patterns:
-  ``LICEN[CS]E*``, ``COPYING*``, ``NOTICE*``, ``AUTHORS**``;
+  ``LICEN[CS]E*``, ``COPYING*``, ``NOTICE*``, ``AUTHORS*``;
 - ``pyproject.toml``;
 - ``setup.cfg``;
 - ``setup.py``;

docs/userguide/pyproject_config.rst

@@ -170,7 +170,7 @@ existing packages should consider migrating to alternatives.
       packages = ["my_package"]
 
    If you want to publish a distribution that does not include any Python module
-   (e.g. a "meta-distribution" that just aggregate dependencies), please
+   (e.g. a "meta-distribution" that just aggregates dependencies), please
    consider something like the following:
 
    .. code-block:: toml

docs/userguide/quickstart.rst

@@ -9,7 +9,7 @@ You can install the latest version of ``setuptools`` using :pypi:`pip`::
 
     pip install --upgrade setuptools[core]
 
-Most of the times, however, you don't have to...
+Most of the time, however, you don't have to...
 
 Instead, when creating new Python packages, it is recommended to use
 a command line tool called :pypi:`build`. This tool will automatically download
@@ -33,7 +33,7 @@ This will allow you to run the command: ``python -m build``.
    check out :doc:`pip installation docs <pip:installation>`.
 
 
-Every python package must provide a ``pyproject.toml`` and specify
+Every Python package must provide a ``pyproject.toml`` and specify
 the backend (build system) it wants to use. The distribution can then
 be generated with whatever tool that provides a ``build sdist``-like
 functionality.
@@ -200,7 +200,7 @@ Package discovery
 For projects that follow a simple directory structure, ``setuptools`` should be
 able to automatically detect all :term:`packages <package>` and
 :term:`namespaces <namespace package>`. However, complex projects might include
-additional folders and supporting files that not necessarily should be
+additional folders and supporting files that should not necessarily be
 distributed (or that can confuse ``setuptools`` auto discovery algorithm).
 
 Therefore, ``setuptools`` provides a convenient way to customize