The installation page said "the manifest for the latest release"
everywhere, even on older versioned docs and on the unreleased Dev
docs. Show the actual version instead (or "the latest development
snapshot from the main branch" on Dev docs).
The "Testing the latest development snapshot" section now explains,
on Dev docs, that the command above already installs that snapshot,
instead of duplicating it.
Signed-off-by: danishedb <danish.khan@enterprisedb.com>
