Update dev_container.rst

Typo

Author: marcelldls

docs/user/tutorials/dev_container.rst

@@ -177,7 +177,7 @@ is mounted into the container as a volume. It is mounted under
 from your local machine and the changes will be visible inside the container and
 outside the container. This is a good thing as you should consider the container
 filesystem to be a temporary filesystem that will be destroyed when the container
-deleted.
+is deleted.
 
 Now that you are *inside* the container you have access to the tools built into
 it, this includes ``ibek``. The first command you should run is:
@@ -303,4 +303,4 @@ we are able to test changes without having to go through a container build
 cycle.
 
 In the following tutorials we will look at how to make changes at each of the
-3 levels listed in `ioc_change_types`.
+3 levels listed in `ioc_change_types`.