Update docs/tutorial/writing-tests/test-case.rst

Co-authored-by: Pierre Equoy <pierre.equoy@canonical.com>

docs/tutorial/writing-tests/test-case.rst

@@ -153,7 +153,7 @@ like this:
 
 .. note::
    Similarly to ``summary`` and ``id``, consider also providing a ``category``
-   for your tests. It makes the output easier to read and present (you can see
+   for your tests. It makes the output easier to read and clearer (you can see
    that we are getting an ``uncategorised`` category right now). Additionally
    it is used in the Test Selection screen to group your tests, so when you
    have many of them, it makes sifting through them that much easier.