Created by: tgummerer
Summary: Soy templates don't add spaces on new lines when the previous line ends with a html tag, or when the new line starts with one. Some places in the docs don't have a {sp} tag to force spaces on these lines. Add these tags where appropriate to improve the visualization of the docs.
In addition remove a stray tag in the immutables documentation.
Test Plan: docs/soyweb-local.sh