aemfvp-a: update doc and repo path for Q1 24 release

Update relative paths in documents to reflect new relative paths.
Update repo links to new location gitlab.arm.com/aemfvp-a

Signed-off-by: nitin sharma <nitin.sharma3@arm.com>
Change-Id: Ie9ad0ef624458a4e58ac53cd116727d44b231f92