Reword comments on new ClientState and watch methods

Signed-off-by: Valerian Roche <valerian.roche@datadoghq.com>

pkg/cache/v3/cache.go

@@ -48,8 +48,8 @@ type ClientState interface {
 	GetKnownResources() map[string]string
 
 	// GetSubscribedResources returns the list of resources currently subscribed to by the client for the type.
-	// For delta it keeps track across requests
-	// For sotw it is a normalized view of the request resources
+	// For delta it keeps track of subscription updates across requests
+	// For sotw it is a normalized view of the last request resources
 	GetSubscribedResources() map[string]struct{}
 
 	// IsWildcard returns whether the client has a wildcard watch.

pkg/cache/v3/status.go

@@ -101,10 +101,10 @@ type DeltaResponseWatch struct {
 	clientState ClientState
 }
 
-// WatchesResources returns whether at least one of the resource provided is currently watch by the stream
-// It is currently only applicable to delta-xds
-// If the request is wildcard, it will always return true
-// Otherwise it will compare the provided resources to the list of resources currently subscribed
+// WatchesResources returns whether at least one of the resources provided is currently being watched by the stream.
+// It is currently only applicable to delta-xds.
+// If the request is wildcard, it will always return true,
+// otherwise it will compare the provided resources to the list of resources currently subscribed
 func (w *DeltaResponseWatch) WatchesResources(resourceNames map[string]struct{}) bool {
 	if w.clientState.IsWildcard() {
 		return true