use gerrydb table instead of map slug

Author: nofurtherinformation

app/src/app/utils/ParquetWorker/parquetWorker.ts

@@ -204,7 +204,7 @@ const ParquetWorker: ParquetWorkerClass = {
     } as GeoJSON.FeatureCollection<GeoJSON.Point>;
   },
   async getDemography(mapDocument, brokenIds) {
-    const url = `${PARQUET_URL}/tabular/${mapDocument.districtr_map_slug}.parquet`;
+    const url = `${PARQUET_URL}/tabular/${mapDocument.gerrydb_table}.parquet`;
     const meta = await this.getMetaData(url);
     const ranges = this.mergeRanges(
       ['__parent', ...(brokenIds || [])].map(id =>