Fix example for 'test-submit rule' in Prolog cookbook Since commit b1f730b89458d9d094bc93f3d328ad744c39bbb5 it is 'test-submit rule' and not anymore 'test-submit-rule'. Change-Id: I4c32893afa1410af5347a8b659c5811aac218f63 Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>