Use first paragraph as summary by default (#22)

sphinx_llms_txt/writer.py

@@ -88,10 +88,12 @@ class FileWriter:
                 if description:
                     # Trim leading and trailing whitespace
                     description = description.strip()
-                    # Replace newlines with newline + blockquote marker to maintain
-                    # blockquote formatting
-                    description = description.replace("\n", "\n> ")
-                    f.write(f"> {description}\n\n")
+                    if description:
+                        # Only add blockquote if description is not empty
+                        # Replace newlines with newline + blockquote marker to maintain
+                        # blockquote formatting
+                        description = description.replace("\n", "\n> ")
+                        f.write(f"> {description}\n\n")
 
                 f.write("## Docs\n\n")
                 # Get base URL from config