fix typo

Author: jinyan-li1

dlc_developer_config.toml

@@ -119,7 +119,7 @@ use_scheduler = false
 ### TRAINING PR JOBS ###
 
 # Standard Framework Training
-dlc-pr-pytorch-training = "pytorch/training/buildspec-2-8-ec2.yml""
+dlc-pr-pytorch-training = "pytorch/training/buildspec-2-8-ec2.yml"
 dlc-pr-tensorflow-2-training = ""
 dlc-pr-autogluon-training = ""