change references like "MineGeld" and "Mine-Geld" to "Minegeld"

also minor doc fixes

Money_Info.txt

@@ -1,4 +1,4 @@
-Mine-Geld
+Minegeld
 ---------
 
 They have no recipe.

craftitems.lua

@@ -3,28 +3,28 @@ local MP = minetest.get_modpath(minetest.get_current_modname())
 local S, NS = dofile(MP.."/intllib.lua")
 
 minetest.register_craftitem("currency:minegeld", {
-    description = S("1 MineGeld Note"),
+    description = S("1 Minegeld Note"),
     inventory_image = "minegeld.png",
         stack_max = 30000,
 		groups = {minegeld = 1}
 })
 
 minetest.register_craftitem("currency:minegeld_5", {
-    description = S("5 MineGeld Note"),
+    description = S("5 Minegeld Note"),
     inventory_image = "minegeld_5.png",
         stack_max = 30000,
 		groups = {minegeld = 1}
 })
 
 minetest.register_craftitem("currency:minegeld_10", {
-    description = S("10 MineGeld Note"),
+    description = S("10 Minegeld Note"),
     inventory_image = "minegeld_10.png",
         stack_max = 30000,
 		groups = {minegeld = 1}
 })
 
 minetest.register_craftitem("currency:minegeld_50", {
-    description = S("50 MineGeld Note"),
+    description = S("50 Minegeld Note"),
     inventory_image = "minegeld_50.png",
         stack_max = 30000,
 		groups = {minegeld = 1}

description.txt

@@ -1 +1 @@
-Provides shops, barter tables, safes, and three denominations of currency, called "Minegeld".
+Provides shops, barter tables, safes, and four denominations of currency, called "Minegeld".