all: Fix various user-facing and non-user-facing typos (#8509)

Found via `codespell -q 3 -S lang,./gui/default/vendor -L benchs,bu,inflight,ro`

cmd/stdiscosrv/replication.go

@@ -120,7 +120,7 @@ func (s *replicationSender) Serve(ctx context.Context) error {
 			if _, err := conn.Write(buf[:4+n]); err != nil {
 				replicationSendsTotal.WithLabelValues("error").Inc()
 				log.Println("Replication write:", err)
-				// Yes, we are loosing the replication event here.
+				// Yes, we are losing the replication event here.
 				return err
 			}
 			replicationSendsTotal.WithLabelValues("success").Inc()