make chains texture filenames follow standard naming practice

chains/init.lua

@@ -7,8 +7,8 @@ minetest.register_node("chains:chain", {
 	sunlight_propagates = true,
 	paramtype = "light",
 	drops = "",
-	tiles = { "Chain.png" },
-	inventory_image = "Chain.png",
+	tiles = { "chains_chain.png" },
+	inventory_image = "chains_chain.png",
 	drawtype = "plantlike",
 	groups = {cracky=3},
 	sounds =  default.node_sound_stone_defaults(),
@@ -21,8 +21,8 @@ minetest.register_node("chains:chain_top", {
 	sunlight_propagates = true,
 	paramtype = "light",
 	drops = "",
-	tiles = { "Chain_top.png" },
-	inventory_image = "Chain_top_inv.png",
+	tiles = { "chains_chain_top.png" },
+	inventory_image = "chains_chain_top_inv.png",
 	drawtype = "plantlike",
 	groups = {cracky=3},
 	sounds =  default.node_sound_stone_defaults(),
@@ -37,8 +37,8 @@ minetest.register_node("chains:chandelier", {
 	sunlight_propagates = true,
 	paramtype = "light",
 	drops = "",
-	tiles = { {name="Chandelier.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=3.0}}},
-	inventory_image = "Chandelier_inv.png",
+	tiles = { {name="chains_chandelier.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=3.0}}},
+	inventory_image = "chains_chandelier_inv.png",
 	drawtype = "plantlike",
 	groups = {cracky=3},
 	sounds =  default.node_sound_stone_defaults(),