Replace references to tests/include

Update them instead to refer to framework/include, where the contents
of tests/include have been moved.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/tests/suites/test_suite_constant_time.function b/tests/suites/test_suite_constant_time.function
index 3127365..620fcfa 100644
--- a/tests/suites/test_suite_constant_time.function
+++ b/tests/suites/test_suite_constant_time.function
@@ -4,7 +4,7 @@
  * Functional testing of functions in the constant_time module.
  *
  * The tests are instrumented with #TEST_CF_SECRET and #TEST_CF_PUBLIC
- * (see tests/include/test/constant_flow.h) so that running the tests
+ * (see framework/include/test/constant_flow.h) so that running the tests
  * under MSan or Valgrind will detect a non-constant-time implementation.
  */