fix: update cellular and gps docs

[brent-sink]

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[github-actions]

PR Review: #5 "fix: update cellular and gps docs"

Title ✓

The PR title follows the conventional commit style: fix: update cellular and gps docs

Changes Overview

This PR updates documentation for:

1. connectivity.mdx - WiFi device tree overlay and Cellular modem documentation
2. embedded-devices.mdx - GNSS receiver device tree overlay and Qt integration

Positives

• Clear, step-by-step instructions for enabling hardware via device tree overlays
• Comprehensive Cellular section with ModemManager, AT commands, and connectivity testing examples
• Good Qt code example for GNSS integration using QNmeaPositionInfoSource
• Proper use of code block titles (e.g., title=ModemManager)

Suggestions

1. Typo in connectivity.mdx:88

   • Current: "enter you APN here"
   • Suggested: "enter your APN here"

2. Syntax issue in connectivity.mdx:107

   • The closing code fence has a leading space: ``` should be ```
   • This may cause rendering issues

3. Minor: Consider adding a troubleshooting section for common Cellular issues (e.g., SIM not detected, APN not working)

Summary

The documentation improvements are valuable and well-structured. The changes correctly explain how to enable hardware via device tree overlays and provide useful command examples. Please address the typo and syntax issue before merging.

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