Fix sintax in job manifest

Author: iankouls-aws

Container-Root/hyperpod/deployment/eks/model-training/pytorchjob/mnist/.gitignore

@@ -1 +1,3 @@
+./result/**
+result
 ./result

Container-Root/hyperpod/deployment/eks/model-training/pytorchjob/mnist/mnist-cpu.yaml

@@ -29,7 +29,8 @@ training_cfg:
   # script_args:
   #  - --max_context_width: 4096
   #  - --num_layers: 32
-script_args: ["--epochs: 100"]
+  script_args: 
+    - --epochs: 100
   run:
     # name: Required. Current Training Job name. Mapping to '--job-name' argument in 'start-job' command.
     name: mnist-cpu