Update app.py

app.py

@@ -1,7 +1,7 @@
 import gradio as gr
 with gr.Blocks(title="Josiah's Gradio Playground") as playground:
-    with gr.Tab(title="Tabs within Tabs"):
-        with gr.Tab(title="1. first"):
+    with gr.Tab("Tabs within Tabs"):
+        with gr.Tab("1. first"):
             gr.Markdown("you're on 1")
-        with gr.Tab(title="2. third"):
+        with gr.Tab("2. third"):
             gr.Markdown("you're on second")