Fix bug

app.py

@@ -11,7 +11,7 @@ def greet(name, lang):
 with gr.Blocks() as demo:
     gr.Markdown(value="> Check out [Repository](https://github.com/hoveychen/gradio-i18n) for more examples")
     lang = gr.Radio(choices=[("English", "en"), ("中文", "zh")], label=_("Language"))
-    with Translate("translation.yaml", lang, placeholder_langs=["en", "zh"]):
+    with Translate("translations.yaml", lang, placeholder_langs=["en", "zh"]):
         name = gr.Textbox(label=_("Name"), placeholder=_("Input your name here."))
         output = gr.Textbox(label=_("Greeting"))
         submit_btn = gr.Button(value=_("Submit"))