Update tutorials with specific MaxText installation options

[bvandermoon]

Description

Update tutorials to explicitly state which MaxText installation option (maxtext[tpu], maxtext[cuda12], maxtext[tpu-post-train]) to use. This helps users set up the correct environment for each specific workflow.

FIXES: b/493988020

Tests

Manual verification by reviewing the modified markdown files to ensure clarity and correctness of links. No functional code changes were made.

Checklist

Before submitting this PR, please make sure (put X in square brackets):

• I have performed a self-review of my code. For an optional AI review, add the gemini-review label.
• I have necessary comments in my code, particularly in hard-to-understand areas.
• I have run end-to-end tests tests and provided workload links above if applicable.
• I have made or will make corresponding changes to the doc if needed, including adding new documentation pages to the relevant Table of Contents (toctree directive) as explained in our documentation.