Fix spelling of private const

Author: brandonc

constants.go

@@ -12,7 +12,7 @@ const (
 	annotationOmitEmpty    = "omitempty"
 	annotationISO8601      = "iso8601"
 	annotationRFC3339      = "rfc3339"
-	annotationSeperator    = ","
+	annotationSeparator    = ","
 
 	iso8601TimeFormat = "2006-01-02T15:04:05Z"
 

response.go

@@ -215,7 +215,7 @@ func visitModelNode(model interface{}, included *map[string]*Node,
 		fieldValue := modelValue.Field(i)
 		fieldType := modelType.Field(i)
 
-		args := strings.Split(tag, annotationSeperator)
+		args := strings.Split(tag, annotationSeparator)
 
 		if len(args) < 1 {
 			er = ErrBadJSONAPIStructTag