Update app.py

app.py

@@ -81,7 +81,7 @@ with gr.Blocks() as demo:
 
   with gr.Row():
     #inputs
-    classcode_tx = gr.Textbox(value='nofilter', label="Filter with ECLASS ClassCode", placeholder='for no filter type: "nofilter"', lines=1)
+    classcode_tx = gr.Textbox(value='nofilter', label="Filter with ECLASS ClassCode", placeholder="for no filter type: 'nofilter'", lines=1)
     top_k_nu = gr.Number(value=10, label="Number of Matches")
     language_drop = gr.Dropdown(["german", "english","french"], value='german', label="Select language")