Fix awkward dependency error message (#1130)

pkg/state/create_test.go

@@ -46,7 +46,7 @@ func TestReadFromYaml(t *testing.T) {
 	}
 }
 
-func TestReadFromYaml_InexistentEnv(t *testing.T) {
+func TestReadFromYaml_NonexistentEnv(t *testing.T) {
 	yamlFile := "example/path/to/yaml/file"
 	yamlContent := []byte(`releases:
 - name: myrelease

pkg/state/state_run.go

@@ -160,7 +160,7 @@ func GroupReleasesByDependency(releases []Release) ([][]Release, error) {
 			for _, n := range r.Needs {
 				if _, ok := idToReleases[n]; !ok {
 					id := ReleaseToID(&r.ReleaseSpec)
-					return nil, fmt.Errorf("%q has dependency to inexistent release %q", id, n)
+					return nil, fmt.Errorf("%q depends on nonexistent release %q", id, n)
 				}
 			}
 		}