Fixing typo in nestset validation (#1165)

Co-authored-by: Andrew Bauer <andrew.c.bauer@usace.army.mil>

src/libs/blueprint/conduit_blueprint_mesh.cpp

@@ -847,7 +847,7 @@ verify_single_domain(const Node &n,
                     chld, chld_info, "topology", "topologies");
             }
 
-            log::validation(info["nestets"],nset_res);
+            log::validation(info["nestsets"],nset_res);
             res &= nset_res;
         }
     }