fixing indent in app.py

app.py

@@ -90,23 +90,23 @@ print('selected_series: ' + str(selected_series))
 
 
 
-    if os.path.exists("DICOMScanClassification_user_demo.ipynb"):
-        os.remove("DICOMScanClassification_user_demo.ipynb")
-
-    subprocess.run(["wget", "https://raw.githubusercontent.com/deepakri201/DICOMScanClassification_pw41/main/DICOMScanClassification_user_demo.ipynb"])
-
-    pm.execute_notebook(
-            "DICOMScanClassification_user_demo.ipynb",
-            'output.ipynb',
-            parameters = dict(SeriesInstanceUID=selected_series)
+if os.path.exists("DICOMScanClassification_user_demo.ipynb"):
+    os.remove("DICOMScanClassification_user_demo.ipynb")
+
+subprocess.run(["wget", "https://raw.githubusercontent.com/deepakri201/DICOMScanClassification_pw41/main/DICOMScanClassification_user_demo.ipynb"])
+
+pm.execute_notebook(
+        "DICOMScanClassification_user_demo.ipynb",
+        'output.ipynb',
+        parameters = dict(SeriesInstanceUID=selected_series)
+)
+
+with open('output.ipynb', "rb") as f:
+    st.download_button(
+        label="Download the output notebook file",
+        data=f,
+        file_name="output.ipynb",
+        mime="application/json"
     )
 
-    with open('output.ipynb', "rb") as f:
-        st.download_button(
-            label="Download the output notebook file",
-            data=f,
-            file_name="output.ipynb",
-            mime="application/json"
-        )
-