Minor typos fix

pkg/controller/node/nodecontroller.go

@@ -417,7 +417,7 @@ func (nc *NodeController) recordNodeStatusChange(node *api.Node, new_status stri
 }
 
 // For a given node checks its conditions and tries to update it. Returns grace period to which given node
-// is entitled, state of current and last observed Ready Condition, and an error if it ocured.
+// is entitled, state of current and last observed Ready Condition, and an error if it occurred.
 func (nc *NodeController) tryUpdateNodeStatus(node *api.Node) (time.Duration, api.NodeCondition, *api.NodeCondition, error) {
 	var err error
 	var gracePeriod time.Duration

pkg/watch/mux.go

@@ -59,7 +59,7 @@ type Broadcaster struct {
 }
 
 // NewBroadcaster creates a new Broadcaster. queueLength is the maximum number of events to queue per watcher.
-// It is guaranteed that events will be distibuted in the order in which they ocur,
+// It is guaranteed that events will be distributed in the order in which they occur,
 // but the order in which a single event is distributed among all of the watchers is unspecified.
 func NewBroadcaster(queueLength int, fullChannelBehavior FullChannelBehavior) *Broadcaster {
 	m := &Broadcaster{