[DOCS] Edited watcher 6.2.2 release notes (elastic/x-pack-elasticsearch#3967)
[DOCS] Edited watcher 6.2.2 release notes (elastic/x-pack-elasticsearch#3967)

Original commit: elastic/x-pack-elasticsearch@62a54a92b6f1e9b66c20828140a25fa3d1dde9c8

vroyer/elassandra,vroyer/elassandra,strapdata/elassandra,strapdata/elassandra,strapdata/elassandra,vroyer/elassandra,strapdata/elassandra,strapdata/elassandra