Corrects the spell used by creature (15304) which fixes item (20503)

Fix based on the tooltip of the item (20503).
[z0196] Add spell (6276) to Healing Ward IV creature (3844). It will heal now.
[z0197] Learning spell Journeyman Blacksmith (2021) from trainers now requires 50 minimum blacksmith skill

Signed-off-by: Ghurok <ghurok@gmail.com>
Merge pull request #16 from mangoszero/master