kunit: test.h: fix a bad kernel-doc markup

As warned by:

	./include/kunit/test.h:504: WARNING: Block quote ends without a blank line; unexpected unindent.

The right way to describe a function is:

	name - description

Instead, kunit_remove_resource was using:

	name: description

Causing it to be improperly parsed.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

include/kunit/test.h

@@ -503,7 +503,7 @@ static inline int kunit_destroy_named_resource(struct kunit *test,
 }
 
 /**
- * kunit_remove_resource: remove resource from resource list associated with
+ * kunit_remove_resource() - remove resource from resource list associated with
  *			     test.
  * @test: The test context object.
  * @res: The resource to be removed.