Update app.py

app.py

@@ -9,7 +9,7 @@ app = Flask(__name__)
 def index():
     return '<h1>OK</h1>'
 
-@app.route("voicevox")
+@app.route("/voicevox")
 def voicevox_resp():
     text = request.args.get("text")
     speaker = request.args.get("speaker")