Add simple system prompt to chat command

commands/misc/chat.js

@@ -24,6 +24,10 @@ module.exports = {
 			body: JSON.stringify({
 				"model": `deepseek/deepseek-chat-v3-0324:free`,
 				"messages": [
+					{
+						"role": 'system',
+						"content": "You are in a discord server. Answer like you're in a chat. Keep responses to the point. No longer than 3 sentences at the absolute maximum"
+					},
 					{
 						"role": `user`,
 						"content": prompt