Replace "Back to Home" with "Back to Guides" in the guides #800
Description
At the bottom of the guides, some have a link that takes you back to the site home page, while others have a link that takes you back to the /guides/ page.
These should be consistent, and take the user back to the /guides/ page.
I'm someone goes to the Getting Started guide from the home page, then the "Back to..." text would be incorrect, but oh well. If you're in a guide the logical place to go for further choices is the page listing all the guides.