Edited Issue: Fix errors in OData resource strings [1557]

Some resources in the OData contain errors that need to be corrected for localization:

CollectionPropertiesMustReturnIEnumerable: CollectionProperties must implement IEnumerable<>. The Property '{0}' declared on '{1}' does not implement IEnumerable<>.
CollectionShouldHaveClearMethod: The type '{0}' of the property '{1}' on type '{2}' does not have an Clear method. Consider using a collection type that does have an Clear method, such as IList<T> or ICollection<T>.

* "The Property" should be "The property"
* "an Clear" should be "a Clear"