Tutorial Starting Town Text updated

[Rias]

Also updated the text in the tutorial room where you can choose Mistral as your starting point:

Mistral Lake is built above the waters of a dark, fog-shrouded lake on wooden platforms and set below the mysterious ruling Mistveil Keep on the central mountainside. Once an elite quarter of the great city Vatnfjall, the lake platform is now the only habitable ground, as the ruins on the shore have long since fallen to decay after the Great Plague and are now overrun with bloodthirsty canim. Recently, Mistveil Keep (and by extension, Mistral Lake) has been expanding its influence beyond the borders of the town, causing others to become concerned with their growing sphere and power. It is not uncommon to see groups of pale, stoic soldiers marching under the black and silver banner of the mist-shrouded tower most anywhere in the Lost Lands these days. Go through the yellow portal if you wish to begin your journey in Mistral Lake.