[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

src/towncrier/_builder.py

@@ -118,7 +118,8 @@ def find_fragments(
     """
     get_section_path = FragmentsPath(base_directory, config)
     template_filename = (
-        os.path.basename(config.template) if isinstance(config.template, str)
+        os.path.basename(config.template)
+        if isinstance(config.template, str)
         else config.template[1]
     )