Update 'Jenkinsfile'

Jenkinsfile

@@ -47,7 +47,7 @@ pipeline {
          withEnv(["KAGGLE_USERNAME=${params.KAGGLE_USERNAME}",
                   "KAGGLE_KEY=${params.KAGGLE_KEY}" ]) {
                sh 'kaggle datasets download -d rush4ratio/video-game-sales-with-ratings'
-               sh 'ls-a | tee ls.txt'
+               sh 'ls -a | tee ls.txt'
          }
          }
       }