update readme.md

app.py

@@ -208,7 +208,7 @@ This is the demo page of our toolkit <a href="https://arxiv.org/abs/2409.07226">
 
 Singing Voice Synthesis (SVS) takes a music score as input and generates singing vocal with the voice of a specific singer.
 
-Music score usually includes lyrics, as well as duration and pitch of each word in lyrics,
+Music score usually includes lyrics, as well as duration and pitch of each word in lyrics.
 
 <h2>How to use:</h2>
     <ol>