Fixed #30367 -- Changed "pip install" to "python -m pip install" in docs, comments and hints.

docs/internals/contributing/writing-code/coding-style.txt

@@ -96,7 +96,7 @@ Imports
 
   .. console::
 
-      $ pip install isort
+      $ python -m pip install isort
       $ isort -rc .
 
   This runs ``isort`` recursively from your current directory, modifying any

docs/internals/contributing/writing-code/javascript.txt

@@ -55,7 +55,7 @@ version. To run it:
 
 .. console::
 
-    $ pip install closure
+    $ python -m pip install closure
     $ python django/contrib/admin/bin/compress.py
 
 Behind the scenes, ``compress.py`` is a front-end for Google's

docs/internals/contributing/writing-code/unit-tests.txt

@@ -30,8 +30,8 @@ Next, clone your fork, install some requirements, and run the tests::
 
    $ git clone git@github.com:YourGitHubName/django.git django-repo
    $ cd django-repo/tests
-   $ pip install -e ..
-   $ pip install -r requirements/py3.txt
+   $ python -m pip install -e ..
+   $ python -m pip install -r requirements/py3.txt
    $ ./runtests.py
 
 Installing the requirements will likely require some operating system packages
@@ -68,7 +68,7 @@ and other checks (such as :ref:`import sorting <coding-style-imports>`, the
 :ref:`code formatting <coding-style-python>`), install and run the ``tox``
 command from any place in the Django source tree::
 
-    $ pip install tox
+    $ python -m pip install tox
     $ tox
 
 By default, ``tox`` runs the test suite with the bundled test settings file for
@@ -240,7 +240,7 @@ You can find these dependencies in `pip requirements files`_ inside the
 ``tests/requirements`` directory of the Django source tree and install them
 like so::
 
-   $ pip install -r tests/requirements/py3.txt
+   $ python -m pip install -r tests/requirements/py3.txt
 
 If you encounter an error during the installation, your system might be missing
 a dependency for one or more of the Python packages. Consult the failing