Help: Add crossrefs to ctest output control options

Help/command/ctest_test.rst

@@ -174,7 +174,10 @@ The options are:
 
 See also the :variable:`CTEST_CUSTOM_MAXIMUM_PASSED_TEST_OUTPUT_SIZE`,
 :variable:`CTEST_CUSTOM_MAXIMUM_FAILED_TEST_OUTPUT_SIZE` and
-:variable:`CTEST_CUSTOM_TEST_OUTPUT_TRUNCATION` variables.
+:variable:`CTEST_CUSTOM_TEST_OUTPUT_TRUNCATION` variables, along with their
+corresponding :manual:`ctest(1)` command line options
+``--test-output-size-passed``, ``--test-output-size-failed``, and
+``--test-output-truncation``.
 
 .. _`Additional Test Measurements`: