Update spatialCoverage mapping in query 2

Author: HarshShinde0

spec-appendix.qmd

@@ -50,12 +50,13 @@ This query returns all datasets whose bounding box matches a specific coordinate
 
 ```sparql
 PREFIX geocr: <http://mlcommons.org/croissant/geo/1.0/>
+PREFIX sc: <https://schema.org/>
 
 SELECT ?dataset ?record ?bbox
 WHERE {
   ?dataset a geocr:Dataset ;
            geocr:recordSet ?record .
-  ?record geocr:BoundingBox ?bbox .
+  ?record sc:spatialCoverage ?bbox .
   FILTER(STR(?bbox) = "[-120.0, 30.0, -110.0, 40.0]")
 }
 ```