add achievement command to text.json
"`{0}randommc` *shows a random Minecraft server if you want a new place to explore*\n\n",
"`{0}mcimage` *turns whatever image you upload into Minecraft blocks / pixel art*\n\n",
"`{0}stealskin <username>` *fetches the skin of a Minecraft Java Edition player*\n\n",
+ "`{0}achievement <text>` *generates a Minecraft achievement from the given text*\n\n",
"`{0}buildidea` *sends a random build idea for if you're bored and need inspiration*\n\n",
"`{0}mccolors` *shows the Minecraft colors and how to use them in the ingame chat*\n\n",
"`{0}nametouuid <username>` *turns a MC Java Edition username into a uuid*\n\n",
