Update app.py

app.py

@@ -38,14 +38,14 @@ head = """
 <meta name="viewport" content="width=device-width" />
 <meta name="twitter:card" content="player"/>
 <meta name="twitter:site" content=""/>
-<meta name="twitter:player" content="https://broadfield-fast-voice-full.hf.space/?pdfurl="/>
-<meta name="twitter:player:stream" content="https://broadfield-fast-voice-full.hf.space/?pdfurl="/>
+<meta name="twitter:player" content="https://broadfield-fast-voice-full.hf.space/?pdfurl=https://arxiv.org/pdf/2412.01821"/>
+<meta name="twitter:player:stream" content="https://broadfield-fast-voice-full.hf.space/?pdfurl=https://arxiv.org/pdf/2412.01821"/>
 <meta name="twitter:player:width" content="100%"/>
 <meta name="twitter:player:height" content="100%"/>    
 <meta property="og:title" content="PDF to Voice"/>
 <meta property="og:description" content="Add PDF link to /?pdfurl= parameter"/>
 <!---meta property="og:image" content=""/--->
-<meta http-equiv="refresh" content="0; url=https://broadfield-fast-voice-full.hf.space/?pdfurl=">
+<!---meta http-equiv="refresh" content="0; url=https://broadfield-fast-voice-full.hf.space/?pdfurl="--->
 <script>
 function run(url_in) {
     let url = String(url_in)