Update app.py

app.py

@@ -91,10 +91,10 @@ def main():
     st.subheader("Step 1: API Key Validation")
     with st.expander("API Key Configuration", expanded=True):
         api_key = st.text_input(
-            "Enter your Gretel API key (https://console.gretel.ai)",
+            "Enter your Gretel API key (Get a free API key at: https://console.gretel.ai/users/me/key)",
             value="",
             type="password",
-            help="Your Gretel API key for authentication",
+            help="Your Gretel API key is required to authenticate and use Gretel Navigator. If you don't have one yet, sign up for a free account at https://console.gretel.ai to get started.",
         )
         if "gretel" not in st.session_state:
             st.session_state.gretel = None