Fix broken link.

Closes #1827.
Fix documentation.

Closes #1823.
Missing indentation.

A code example was missing 2 spaces on its indentation and Markdown was parsing it as regular text.
1799. Broken link for configuration reference.
Merge branch 'stable'

Conflicts:
	compass-style.org/content/help/tutorials.haml
Merge branch 'patch-1' of https://github.com/philgruneich/compass into philgruneich-patch-1
Merge branch 'stable'