Apply suggestions from code review

Co-authored-by: Conrad Dobberstein <29147025+dobbersc@users.noreply.github.com>

src/fundus/scraping/common_crawl/pipeline.py

@@ -116,8 +116,8 @@ def _get_warc_paths(self, start: datetime, end: datetime) -> List[str]:
             raise ValueError("The specified end date is in the future. We don't want to give spoilers, do we?")
 
         date_sequence: List[datetime] = list(rrule(MONTHLY, dtstart=start, until=end))
-        urls = [
-            self.server_address + f"crawl-data/CC-NEWS/{date.strftime('%Y/%m')}/warc.paths.gz" for date in date_sequence
+        urls: List[str] = [
+            f"{self.server_address}crawl-data/CC-NEWS/{date.strftime('%Y/%m')}/warc.paths.gz" for date in date_sequence
         ]
 
         def load_paths(url: str) -> List[str]:
@@ -144,7 +144,7 @@ def filter_warc_path_by_date(path: str) -> bool:
             return start_strf <= match["date"] <= end_strf
 
         return sorted(
-            [self.server_address + warc_path for warc_path in filter(filter_warc_path_by_date, warc_paths)],
+            (f"{self.server_address}{warc_path}" for warc_path in filter(filter_warc_path_by_date, warc_paths)),
             reverse=True,
         )