Update nav header

multiapp.py

@@ -10,8 +10,9 @@ class MultiApp:
         self.apps.append({"title": title, "function": func})
 
     def run(self):
+        st.title("Multilingual VQA")
         logo = st.sidebar.image("./misc/mvqa-logo-3-white.png")
-        st.sidebar.header("Navigation")
+        st.sidebar.header("Go To:")
         app = st.sidebar.radio(
             "", self.apps, format_func=lambda app: app["title"]
         )