fix formatting of dvc/analytics.py

based on https://github.com/iterative/dvc/pull/2987/files#diff-60f82c04687a06de3f632551d63de49e

Author: jorgeorpinel

dvc/analytics.py

@@ -164,4 +164,6 @@ def _find_or_create_user_id():
             return user_id
 
     except LockError:
-        logger.debug("Failed to acquire '{lockfile}'".format(lockfile=lockfile))
+        logger.debug(
+            "Failed to acquire '{lockfile}'".format(lockfile=lockfile)
+        )