use endswith to clean up scripting (NOAA-EMC#2862)

ush/python/pygfs/jedi/jedi.py

@@ -251,7 +251,7 @@ def extract_tar(self, task_config: AttrDict, tar_dict) -> Dict[str, Any]:
 
         # extract bias correction files from tar file
         for tar_file in tar_dict['copy']:
-            if ".tar" in tar_file[1]:
+            if tar_file[1].endswith('.tar'):
                 try:
                     with tarfile.open(tar_file[1], "r") as tarball:
                         tarball.extractall(path=os.path.join(task_config.DATA, 'obs'))