Add vendor documentation links for PCM and PH configuration

[jasondaming]

Summary

Adds seealso boxes linking to vendor documentation for Pneumatic Control Module (CTRE) and Pneumatic Hub (REV) configuration and firmware updates.

Changes

• wiring-pneumatics-pcm.rst: Added seealso box with two CTRE documentation links:
  • CAN Bus Setup guide (device IDs, firmware updates, troubleshooting)
  • PCM Bring-Up guide (testing solenoids and compressor operation)
• wiring-pneumatics-ph.rst: Added seealso box linking to REV Pneumatic Hub documentation for configuration via REV Hardware Client and firmware updates

These links provide teams with vendor-specific configuration guidance that complements the wiring instructions in the main docs.

Fixes #2272

[sciencewhiz]

One thing that stopped me in the past from doing this is vendor documentation required jumping to several disparate areas. Is it better now? (I'm on mobile)

[jasondaming]

The CTRE link was broken and still isn't great. The REV link goes to the overview and has other articles right behind it. I think this is helpful

[sciencewhiz]

I think at a minimum CTRE needs both https://v5.docs.ctr-electronics.com/en/stable/ch08_BringUpCAN.html and https://v5.docs.ctr-electronics.com/en/stable/ch09_BringUpPCM.html but there's also a lot of irrelevant stuff there too. Also, that doesn't have any technical specs like the PR says it will.