Update install-ubuntu.rst

Fix typo uprade ==>> upgrade

source/install/install-ubuntu.rst

@@ -148,7 +148,7 @@ When a new Mattermost version is released, run: ``sudo apt update && sudo apt up
 
 .. note::
 
-	When you run the ``sudo apt uprade`` command, ``mattermost-server`` will be updated along with any other packages. We strongly recommend you stop the Mattermost Server before running the ``apt`` command using ``sudo systemctl stop mattermost-server``.
+	When you run the ``sudo apt upgrade`` command, ``mattermost-server`` will be updated along with any other packages. We strongly recommend you stop the Mattermost Server before running the ``apt`` command using ``sudo systemctl stop mattermost-server``.
 
 Remove Mattermost
 ------------------
@@ -164,4 +164,4 @@ Frequently asked questions
 --------------------------
 
 .. include:: common-deploy-faq.rst
-  :start-after: :nosearch:
+  :start-after: :nosearch: