Fix syntax error: correct indentation of except block

pdf_comparator.py

@@ -333,7 +333,7 @@ def compare_pdfs(file_a, file_b):
 
         return overlay, a_disp, b_disp, status, codes_a, codes_b
 
-        except Exception as e:
+    except Exception as e:
         error_msg = f"❌ **Error:** {str(e)}"
         return None, None, None, error_msg, [], []