Expanded letters help text.

src/games/letters.js

@@ -193,7 +193,7 @@ function onMessage(message, context) {
 
 module.exports = {
 	name: 'Letters',
-	help: `Make the longest word from the ${config.letters.length} letters on the board. Start with ${config.prefix}letters, and fill the board by selecting a vow(el), a con(sonant), or multiple at once like CCVVCCVVC.`,
+	help: `Make the longest word from the ${config.letters.length} letters on the board. Quick-start with ${config.prefix}letsgo, or use ${config.prefix}letters to fill the board by manually selecting a vow(el), a con(sonant), or multiple at once like CCVVCCVVC.`,
 	commands: ['letsgo'],
 	onCommand,
 	onMessage,