Update release note label

Remove Dublin reference
Update Overview.rst adding El Alto line in Release table

Issue-ID: DOC-554

Signed-off-by: Eric Debeau <eric.debeau@orange.com>
Change-Id: I14af0d147dea4a506da948f29b6a508293b3af68
(cherry picked from commit ddbab33a17a86bba7c45cb53064bde2a9fba8287)
3 files changed