add note about uploads

app.py

@@ -145,7 +145,7 @@ if __name__ == "__main__":
         with gr.Column():
 
             gr.Markdown("## Load Inputs")
-            gr.Markdown("Upload your own file & replace the default")
+            gr.Markdown("Upload your own file & replace the default. Files should be < 10MB to avoid upload issues - search for a PDF compressor online as needed.")
             gr.Markdown(
                 "_If no file is uploaded, a sample PDF will be used. PDFs are truncated to 20 pages._"
             )