drm/tests: managed: Rename the suite name to match other DRM tests

DRM tests use "_" rather than "-" as word separator. Rename the test
suite to match other tests.
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240115171351.504264-3-michal.winiarski@intel.com

drivers/gpu/drm/tests/drm_managed_test.c

@@ -61,7 +61,7 @@ static struct kunit_case drm_managed_tests[] = {
 };
 
 static struct kunit_suite drm_managed_test_suite = {
-	.name = "drm-test-managed",
+	.name = "drm_managed",
 	.test_cases = drm_managed_tests
 };