[Docs] Update flytectl_update_workflow-execution-config.rst

[pranshustuff]

Added the usage of raw_output_data_config in flytectl update workflow-execution-config page of docs,

Tracking issue

Closes #4615

Why are the changes needed?

To show the usage of flytectl to update raw output data config.

What changes were proposed in this pull request?

Updated the examples to showcase the same.

Check all the applicable boxes

• [x] I updated the documentation accordingly.
• [x] All new and existing tests passed.
• [x] All commits are signed-off.

Docs link

The 2 example Code blocks in the synopsis part were changed