fix config.json

app.py

@@ -30,7 +30,7 @@ if uploaded_file is not None:
                    output="./grobidoutputs/",
                    n=20)
     
-    output_file_path = os.path.join("grobidoutputs", os.path.splitext(uploaded_file.name)[0] + "tei.xml")
+    output_file_path = os.path.join("grobidoutputs", os.path.splitext(uploaded_file.name)[0] + ".tei.xml")
     
     monkeyReader = reader.MonkeyReader('x2d')
     outline = monkeyReader.readOutline(output_file_path)