fix indentation in Gradio interface setup

app.py

@@ -51,7 +51,7 @@ def transcribe(audio, state=""):
 with gr.Blocks(title="Real-time Speech-to-Text with NeMo") as demo:
     gr.Markdown("# 🎙️ Real-time Speech-to-Text Transcription")
     gr.Markdown("Powered by NVIDIA NeMo and the parakeet-tdt-0.6b-v2 model")
-      with gr.Row():
+    with gr.Row():
         with gr.Column(scale=2):
             audio_input = gr.Audio(
                 sources=["microphone"],