only return lowercase

internal/words/get_words.go

@@ -2,9 +2,10 @@ package words
 
 import (
 	"math/rand/v2"
+	"strings"
 )
 
 func GetRandomWord() string {
 	// https://stackoverflow.com/a/22876612/16804841
-	return Words[rand.IntN(len(Words))]
+	return strings.ToLower(Words[rand.IntN(len(Words))])
 }