Escaping newlines in first line of multi-line commands to make them copy&pastable.

Working through setting up a quick Gitlab test install on a test k8s cluster I noticed that copying https://docs.gitlab.com/charts/installation/tls.html#option-4-use-auto-generated-self-signed-wildcard-certificate would not work as the newline wasn't escaped in the first line of the multi-line commands.

This change simply escapes first new-lines for all the example on that page.