DOCPS-31571: Add upgrade information (#779)

* DOCPS-31571: Add upgrade information

* small changes

* wording

* feedback fixes

* vale fix

* adding clarifying info

(cherry picked from commit 31ac73b)

source/upgrade.txt

@@ -13,9 +13,12 @@ Upgrade Driver Versions
 Overview
 --------
 
-On this page, you can learn about any changes you might need to make to
-your application to upgrade your driver to a new version without loss of
-functionality.
+On this page, you can learn how to upgrade your driver to a new version. This page also 
+includes the changes you must make to your application to upgrade your driver 
+without losing functionality, if applicable.
+
+How to Upgrade
+--------------
 
 Before you upgrade, perform the following actions:
 
@@ -35,6 +38,18 @@ Before you upgrade, perform the following actions:
    application when upgrading driver versions by using the
    :ref:`{+stable-api+} <nodejs-stable-api>`.
 
+To upgrade your driver version, run the following command in your application's 
+directory:
+
+.. code-block:: bash
+
+    npm install mongodb@{+version+}
+
+To upgrade to a different version of the driver, replace the information after the
+``@`` symbol with your preferred version number. For more information about the
+``npm install`` command, see the `npm-install <https://docs.npmjs.com/cli/v10/commands/npm-install?v=true>`__ 
+npm documentation.
+
 .. _node-breaking-changes:
 
 Breaking Changes