Fix F17 CFN link in Getting Started

F17 CFN links in Getting Started material were no longer valid. The
missing path component (F17) has been added.

As other impacted content is slated for removal this resolves the issue
with the CFN links described in bug #1231310.

Change-Id: I21e1c69aadc4d36b7c3e3e277c01bd80345611b9
Closes-Bug: #1231310
Merge "Fix F17 CFN link in Getting Started"