Update app.py

app.py

@@ -20,11 +20,11 @@ def summarize_pdf(pdf_file):
     if pdf_file is not None: 
         with st.spinner('Generando resumen, espera un poco...'):
             reader = PyPDF2.PdfReader(pdf_file)
-            if reader.metadata.title == None
+            if reader.metadata.title == None:
                 title = ''
             else:
                 title = reader.metadata.title
-            if reader.metadata.author == None
+            if reader.metadata.author == None:
                 author = ''
             else:
                 author = reader.metadata.author