[GOTG] Typos and Fixes

[NickVendel]

• - Armor of Safeguarding's and Zephyr Armor's type is displayed as Plate, when book lists them as Heavy and Light armors respectively. @JarodHuber [GOTG] Fixed type additions on magic armor #316

[JarodHuber]

Zephyr Armor is supposed to be available to Light Armors and is mis-tagged as "plate". (GOTG p. 117)
Armor of Safeguarding is available to all Heavy Armor and is mis-tagged as "plate". (GOTG p. 111)