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

docs/topics/auth/passwords.txt

@@ -86,9 +86,10 @@ use of Argon2 rather than the other algorithms supported by Django.
 
 To use Argon2 as your default storage algorithm, do the following:
 
-#. Install the `argon2-cffi library`_.  This can be done by running ``pip
-   install django[argon2]``, which is equivalent to ``pip install argon2-cffi``
-   (along with any version requirement from Django's ``setup.py``).
+#. Install the `argon2-cffi library`_.  This can be done by running
+   ``python -m pip install django[argon2]``, which is equivalent to
+   ``python -m pip install argon2-cffi`` (along with any version requirement
+   from Django's ``setup.py``).
 
 #. Modify :setting:`PASSWORD_HASHERS` to list ``Argon2PasswordHasher`` first.
    That is, in your settings file, you'd put::
@@ -115,9 +116,10 @@ use it Django supports bcrypt with minimal effort.
 
 To use Bcrypt as your default storage algorithm, do the following:
 
-#. Install the `bcrypt library`_. This can be done by running ``pip install
-   django[bcrypt]``, which is equivalent to  ``pip install bcrypt`` (along with
-   any version requirement from Django's ``setup.py``).
+#. Install the `bcrypt library`_. This can be done by running
+   ``python -m pip install django[bcrypt]``, which is equivalent to
+   ``python -m pip install bcrypt`` (along with any version requirement from
+   Django's ``setup.py``).
 
 #. Modify :setting:`PASSWORD_HASHERS` to list ``BCryptSHA256PasswordHasher``
    first. That is, in your settings file, you'd put::

docs/topics/install.txt

@@ -155,7 +155,7 @@ This is the recommended way to install Django.
 
    .. console::
 
-        $ pip install Django
+        $ python -m pip install Django
 
 .. _pip: https://pip.pypa.io/
 .. _virtualenv: https://virtualenv.pypa.io/
@@ -214,7 +214,7 @@ latest bug fixes and improvements, follow these instructions:
 
    .. console::
 
-        $ pip install -e django/
+        $ python -m pip install -e django/
 
    This will make Django's code importable, and will also make the
    ``django-admin`` utility command available. In other words, you're all

docs/topics/templates.txt

@@ -385,7 +385,7 @@ Requires Jinja2_ to be installed:
 
 .. console::
 
-    $ pip install Jinja2
+    $ python -m pip install Jinja2
 
 Set :setting:`BACKEND <TEMPLATES-BACKEND>` to
 ``'django.template.backends.jinja2.Jinja2'`` to configure a Jinja2_ engine.

docs/topics/testing/tools.txt

@@ -920,7 +920,7 @@ Python path:
 
 .. console::
 
-    $ pip install selenium
+    $ python -m pip install selenium
 
 Then, add a ``LiveServerTestCase``-based test to your app's tests module
 (for example: ``myapp/tests.py``). For this example, we'll assume you're using