Update app.py

app.py

@@ -100,7 +100,7 @@ def read_file_content(file,max_length):
     elif file.type == "application/xml" or file.type == "text/xml":
         tree = ET.parse(file)
         root = tree.getroot()
-        xml = CompressXML(ET.tostring(root, encoding='unicode')
+        xml = CompressXML(ET.tostring(root, encoding='unicode'))
         return xml(:max_length)
     elif file.type == "text/markdown" or file.type == "text/md":
         md = mistune.create_markdown()