added unsafe allow html parameter

app.py

@@ -125,7 +125,7 @@ def main(det_archs, reco_archs):
                 st.markdown("\n### **Here is your document structure in JSON format:**")
                 encoded_data = base64.b64encode(json.dumps(page_export).encode("utf-8")).decode("utf-8")
                 download_link = f"data:application/json;base64,{encoded_data}"
-                st.markdown(f"[Download JSON]( {download_link} )")
+                st.markdown(f"[Download JSON]( {download_link} )", unsafe_allow_html=True)
                 # st.download_button(label="Download JSON", data=json_string, file_name='data.json', mime='application/json')
                 st.json(page_export, expanded=False)