Rename “Minimal development test” to “Development Test” (#9928)

games/devtest/mods/testformspec/dummy_items.lua

@@ -0,0 +1,14 @@
+-- This code adds dummy items that are supposed to be used in formspecs
+-- for testing item_image formspec elements.
+
+minetest.register_node("testformspec:node", {
+	description = "Formspec Test Node",
+	tiles = { "testformspec_node.png" },
+	groups = { dig_immediate = 3, dummy = 1 },
+})
+
+minetest.register_craftitem("testformspec:item", {
+	description = "Formspec Test Item",
+	inventory_image = "testformspec_item.png",
+	groups = { dummy = 1 },
+})