[RELEASE_INSTRUCTIONS] add note about including next scheduled release in release announcement
[RELEASE_INSTRUCTIONS] add note about including next scheduled release in release announcement

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@16382 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot