Minor grammar/spelling changes

Fixes #61

planets/biomes.json

@@ -21,7 +21,7 @@
 	},
 	"desert": {
 		"name": "Desert",
-		"description": "A desert planet prone to unpredictable and dangerous,sand twisters."
+		"description": "A desert planet prone to unpredictable and dangerous sand twisters."
 	},
 	"winter": {
 		"name": "Winter",
@@ -69,10 +69,10 @@
 	},
 	"swamp": {
 		"name": "Swamp",
-		"description": "Tall, gnarled trees flourish across the surface of this forested world. Sunlight filters past dangling vines, to the saturated udnergrowth below."
+		"description": "Tall, gnarled trees flourish across the surface of this forested world. Sunlight filters past dangling vines, to the saturated undergrowth below."
 	},
 	"foggy_swamp": {
 		"name": "Foggy Swamp",
 		"description": "Squelching mud, twisting roots; the odor of rot and anarchy. A teeming, endless morass."
 	}
-}
+}