docs: update docs to point to container 25.02

[terrykong]

What does this PR do ?

Add a one line overview of what this PR aims to accomplish.

Changelog

• Please update the CHANGELOG.md under next version with high level changes in this PR.

Usage

• You can potentially add a usage example below

# Add a code snippet demonstrating how to use this 

Before your PR is "Ready for review"

Pre checks:

• Make sure you read and followed Contributor guidelines
• Did you write any new necessary tests?
• Did you add or update any necessary documentation? Make sure to also update the NeMo Framework User Guide which contains the tutorials

Checklist when contributing a new algorithm

• Does the trainer resume and restore model state all states?
• Does the trainer support all parallelism techniques(PP, TP, DP)?
• Does the trainer support max_steps=-1 and validation?
• Does the trainer only call APIs defined in alignable_interface.py?
• Does the trainer have proper logging?

Additional Information

• Related to # (issue)

The merge-base changed after approval.

[jgerh]

Comments on README.md

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• The NeMo-Aligner Paper is now out on arXiv!

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• Self-Play Fine-Tuning (SPIN) as described in Self-Play Fine-Tuning Converts Weak Language Models to Strong Language Models.

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Get Started with NeMo-Aligner

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NeMo-Aligner is included with NeMo containers. To run a NeMo container on a machine with NVIDIA GPUs and drivers installed, use the following command:

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Once inside the container, you'll find NeMo-Aligner pre-installed. You can locate it, along with NeMo and other tools, in the ```/opt/`` folder.

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Future Work