Fix Gerrit version given in linux quickstart guide
Fix Gerrit version given in linux quickstart guide

Change-Id: Ib019178cfecb22dc20385845b94aec8b6d46b9d2

GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit