docs: Disable GitInfo by default

Use `--enableGitInfo` when publishing.

This gives a much better out-of-the-box editing experience.

config.toml

@@ -2,7 +2,6 @@ title = "Hugo: A Fast and Flexible Website Generator"
 baseurl = "http://gohugo.io/"
 MetaDataFormat = "yaml"
 pluralizeListTitles = false
-enableGitInfo = true
 
 [blackfriday]
   plainIDAnchors = true