sawgraph-water-ontology.ttl missing hyf:HY_WaterBody rdfs:subClassOf hyfo:SurfaceWaterFeature

The file [sawgraph-water-ontology.ttl](https://github.com/SAWGraph/water-kg/blob/7d0f7745053958332d8fb8262cceb0f3c1b4cda3/ontologies/sawgraph-water-ontology.ttl#L196) is missing the `hyf:HY_WaterBody` `rdfs:subClassOf` `hyfo:SurfaceWaterFeature` relation. The file will be updated here but will likely remain out of data on the 7201 repository for some time.