grpc: fixing typos (grpc#8796)

This change fixes some typos.
RELEASE NOTES: none

Author: mbissa

internal/stats/metrics_recorder_list.go

@@ -153,7 +153,7 @@ type asyncRecorderWrapper struct {
 // RecordIntAsync64Gauge records the measurement alongside labels on the int
 // gauge associated with the provided handle.
 func (w *asyncRecorderWrapper) RecordInt64AsyncGauge(handle *estats.Int64AsyncGaugeHandle, value int64, labels ...string) {
-	// Ensure only metrics for descriptors passed during callback registeration
+	// Ensure only metrics for descriptors passed during callback registration
 	// are emitted.
 	d := handle.Descriptor()
 	if _, ok := w.descriptors[d]; !ok {

internal/xds/xdsdepmgr/xds_dependency_manager.go

@@ -301,7 +301,7 @@ func (m *DependencyManager) maybeSendUpdateLocked() {
 //	[]string:             A slice of all "leaf" cluster names discovered in the
 //	                      traversal starting from `clusterName`. For
 //	                      non-aggregate clusters, this will contain only `clusterName`.
-//	error:                Error that needs to be propogated up the tree (like
+//	error:                Error that needs to be propagated up the tree (like
 //	                      max depth exceeded or an error propagated from a
 //	                      child cluster).
 func (m *DependencyManager) populateClusterConfigLocked(clusterName string, depth int, clusterConfigs map[string]*xdsresource.ClusterResult, endpointResourcesSeen, dnsResourcesSeen, clustersSeen map[string]bool) (bool, []string, error) {
@@ -798,7 +798,7 @@ func (m *DependencyManager) onDNSError(resourceName string, err error) {
 	m.maybeSendUpdateLocked()
 }
 
-// RequestDNSReresolution calls all the the DNS resolver's ResolveNow.
+// RequestDNSReresolution calls all the DNS resolver's ResolveNow.
 func (m *DependencyManager) RequestDNSReresolution(opt resolver.ResolveNowOptions) {
 	m.mu.Lock()
 	defer m.mu.Unlock()

internal/xds/xdsdepmgr/xds_dependency_manager_test.go

@@ -1425,7 +1425,7 @@ func (s) TestAggregateClusterMaxDepth(t *testing.T) {
 	}
 }
 
-// Tests the scenrio where the Endpoint watcher receives an ambient error. Tests
+// Tests the scenario where the Endpoint watcher receives an ambient error. Tests
 // verifies that the error is stored in resolution note and the update remains
 // too.
 func (s) TestEndpointAmbientError(t *testing.T) {