wiki: audit fixes — broken links, wikilinks, frontmatter, stale content (66 files)

- Fixed 4 broken markdown links (bad relative paths in See Also sections)
- Corrected n8n port binding to 127.0.0.1:5678 (matches actual deployment)
- Updated SnapRAID article with actual majorhome paths (/majorRAID, disk1-3)
- Converted 67 Obsidian wikilinks to relative markdown links or plain text
- Added YAML frontmatter to 35 articles missing it entirely
- Completed frontmatter on 8 articles with missing fields

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

02-selfhosting/docker/debugging-broken-docker-containers.md

@@ -164,5 +164,5 @@ Don't jump straight to the nuclear option. Only use `-v` if you want a completel
 
 ## See Also
 
-- [[docker-vs-vms-homelab]]
-- [[tuning-netdata-web-log-alerts]]
+- [docker-vs-vms-homelab](docker-vs-vms-homelab.md)
+- [tuning-netdata-web-log-alerts](../monitoring/tuning-netdata-web-log-alerts.md)