docs: go2 preflight checklist

[leshy]

go2 nav preflight checklist was missing - people will have issues, added

[greptile-apps]

Greptile Summary

Added a pre-flight checklist section before the Go2 robot setup instructions. The checklist includes three essential checks: network connectivity verification (ping test), reminder to enable built-in obstacle avoidance, and clock synchronization instructions using NTP for video/lidar sync issues.

• Improved user experience by providing clear pre-requisites before running the robot
• Reorganized content by moving the obstacle avoidance tip from below into the checklist
• Added practical troubleshooting guidance for common clock sync issues
• Minor spelling error: "reacheable" should be "reachable"

Confidence Score: 4/5

• This PR is safe to merge with minimal risk - it's a documentation improvement
• Documentation-only change that improves user experience by adding a helpful pre-flight checklist. Only issue is a minor spelling error ("reacheable" → "reachable") that should be fixed before merge
• No files require special attention beyond fixing the spelling error

Important Files Changed

Filename	Overview
docs/platforms/quadruped/go2/index.md	Added pre-flight checklist for Go2 setup - includes network check, obstacle avoidance reminder, and NTP sync; minor spelling error found

_{Last reviewed commit: ac8f3bc}

[greptile-apps]

_{1 file reviewed, 1 comment}

_{Edit Code Review Agent Settings | Greptile}

[greptile-apps]

"reacheable" is misspelled

Suggested change

	1. Robot is reacheable and low latency <10ms, 0% packet loss
	1. Robot is reachable and low latency <10ms, 0% packet loss