Fix typos: expectd->expected, cluser->cluster

Signed-off-by: mooncake <xcoder@tenxcloud.com>

examples/combineConfigs.md

@@ -291,7 +291,7 @@ kustomize build $OVERLAYS/production
 ```
 
 A CICD process could apply this directly to
-the cluser using:
+the cluster using:
 
 > ```
 > kustomize build $OVERLAYS/production | kubectl apply -f -

pkg/transformers/labelsandannotations.go

@@ -77,7 +77,7 @@ func (o *mapTransformer) Transform(m resmap.ResMap) error {
 func (o *mapTransformer) addMap(in interface{}) (interface{}, error) {
 	m, ok := in.(map[string]interface{})
 	if !ok {
-		return nil, fmt.Errorf("%#v is expectd to be %T", in, m)
+		return nil, fmt.Errorf("%#v is expected to be %T", in, m)
 	}
 	for k, v := range o.m {
 		m[k] = v

pkg/transformers/namereference.go

@@ -73,7 +73,7 @@ func (o *nameReferenceTransformer) updateNameReference(
 	return func(in interface{}) (interface{}, error) {
 		s, ok := in.(string)
 		if !ok {
-			return nil, fmt.Errorf("%#v is expectd to be %T", in, s)
+			return nil, fmt.Errorf("%#v is expected to be %T", in, s)
 		}
 		for id, res := range m {
 			if id.Gvk().IsSelected(&backRef) && id.Name() == s {

pkg/transformers/prefixname.go

@@ -101,7 +101,7 @@ func (o *namePrefixTransformer) Transform(m resmap.ResMap) error {
 func (o *namePrefixTransformer) addPrefix(in interface{}) (interface{}, error) {
 	s, ok := in.(string)
 	if !ok {
-		return nil, fmt.Errorf("%#v is expectd to be %T", in, s)
+		return nil, fmt.Errorf("%#v is expected to be %T", in, s)
 	}
 	return o.prefix + s, nil
 }

pkg/transformers/refvars.go

@@ -51,7 +51,7 @@ func (rv *refvarTransformer) Transform(resources resmap.ResMap) error {
 				case interface{}:
 					s, ok := in.(string)
 					if !ok {
-						return nil, fmt.Errorf("%#v is expectd to be %T", in, s)
+						return nil, fmt.Errorf("%#v is expected to be %T", in, s)
 					}
 					runtimeVal := expansion.Expand(s, mappingFunc)
 					return runtimeVal, nil

pkg/transformers/util.go

@@ -60,7 +60,7 @@ func mutateField(
 			item := typedV[i]
 			typedItem, ok := item.(map[string]interface{})
 			if !ok {
-				return fmt.Errorf("%#v is expectd to be %T", item, typedItem)
+				return fmt.Errorf("%#v is expected to be %T", item, typedItem)
 			}
 			err := mutateField(typedItem, newPathToField, createIfNotPresent, fns...)
 			if err != nil {