Fixed #21218 -- Typo on docs/howto/upgrade-version.txt

Thanks ryan at ryangallen.com for the report.

docs/howto/upgrade-version.txt

@@ -47,7 +47,7 @@ Installation
 
 Once you're ready, it is time to :doc:`install the new Django version
 </topics/install>`. If you are using virtualenv_ and it is a major upgrade, you
-might want to set up a new environment will all the dependencies first.
+might want to set up a new environment with all the dependencies first.
 
 Exactly which steps you will need to take depends on your installation process.
 The most convenient way is to use pip_ with the ``--upgrade`` or ``-U`` flag: