[Bugfix] fix(logging): add missing opening square bracket (vllm-project#13011)

Author: bufferoverflow

vllm/logger.py

@@ -20,7 +20,7 @@
 VLLM_LOGGING_PREFIX = envs.VLLM_LOGGING_PREFIX
 
 _FORMAT = (f"{VLLM_LOGGING_PREFIX}%(levelname)s %(asctime)s "
-           "%(filename)s:%(lineno)d] %(message)s")
+           "[%(filename)s:%(lineno)d] %(message)s")
 _DATE_FORMAT = "%m-%d %H:%M:%S"
 
 DEFAULT_LOGGING_CONFIG = {