Round to six digits after a comma

src/wiki-normalizer.ts

@@ -43,8 +43,8 @@ class WikiNormalizer extends Transform {
       const data = Buffer.from(chunk.parsed.data).toString('utf8');
       const obj = JSON.parse(data);
       // helpers
-      const lat = this.getValue(obj, 'P625', 'latitude');
-      const lon = this.getValue(obj, 'P625', 'longitude');
+      const lat = Number.parseFloat(this.getValue(obj, 'P625', 'latitude')).toFixed(6);
+      const lon = Number.parseFloat(this.getValue(obj, 'P625', 'longitude')).toFixed(6);
 
       // if not coordinates ignore
       if (!lat || !lon) {