Fix documentation error in ray pytorch example

[elyall]

What does this PR do?

🛑 Please open an issue first to discuss any significant work and flesh out details/direction - we would hate for your time to be wasted.
Consult the CONTRIBUTING guide for submitting pull-requests.

It fixes an error in the documentation for the ray pytorch example, specifically in the port-forwarding call.

Motivation

It's an easy fix I noticed while implementing the example.

More

• Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• Mandatory for new blueprints. Yes, I have added a example to support my blueprint PR
• Mandatory for new blueprints. Yes, I have updated the website/docs or website/blog section for this feature
• Yes, I ran pre-commit run -a with this PR. Link for installing pre-commit locally

For Moderators

• E2E Test successfully complete before merge?

Additional Notes

I didn't run any tests since it's a simple documentation fix.

[vara-bonthu]

Thanks for fix @elyall 👍🏼