add space to logger output

src/ted2zim/scraper.py

@@ -869,7 +869,7 @@ def extract_info_from_video_page(
             return json_data
         except Exception as exc:
             logger.error(
-                f"Problem occured while parsing {url}, error: {exc!s}."
+                f"Problem occured while parsing {url}, error: {exc!s}. "
                 f"HTML content was:\n{html_content}"
             )
             raise