fixing preview image paths

13th_Age/sheet.json

@@ -2,6 +2,6 @@
 	"html": "13th_Age.html",
 	"css": "13th_Age.css",
 	"authors": "Daniel Whitmer",
-	"preview": "13th_Age.png",
+	"preview": "13thage.png",
 	"instructions": "STR is the stat, STRMOD is the stat mod STRMODLevel is the mod + level"
 }

DnDNext/sheet.json

@@ -2,6 +2,6 @@
 	"html": "D&DNext.html",
 	"css": "D&DNext.css",
 	"authors": "David L. Hawkins (@The Story Teller)& Aaron C. Meadows",
-	"preview": "D&DNext.jpg",
+	"preview": "dndnext.jpg",
 	"instructions": "# D&DNext Character Sheet\r Laid out for easy reference and all dice rolls have been formated together for easy access. Rolls prompt for misc. modifiers, just input relevant mod and press enter. The intiiative requires the characters token to be selected, and will add them to the turn order. Skill check boxes account for Proficiency (Prof.) and Expertise (Expr.) respectivly.\r\r## Useful Attributes\r\r* HP\r* HP_max\r* HD\r* HD_max\r* AC\r* ACNoArmor\r* speed\r* initiative\r* PB (Proficiency Bonus)\r* spellsavedc\r**Ability Scores**\r\r* strength / StrMod\r* dexterity / DexMod\r* consititution / ConMod\r* intelligence / IntMod\r* wisdom / WisMod\r* charisma / ChaMod"
 }

Numenera/sheet.json

@@ -2,6 +2,6 @@
 	"html": "Numenera.html",
 	"css": "Numenera.css",
 	"authors": "David Hawkins (The Story Teller)",
-	"preview": "Numenera.png",
+	"preview": "numenera.png",
 	"instructions": "**Numenera Sheet**\n\n Attempted to match the lay out and color scheme as best as I could. This sheet did not seem to require any fancy roll coding or auto calculating. Just fill in everything and play! Have fun!"
 }