Merge pull request #729 from topcoder-platform/TOP-2364

Minor fix for unmapped type to fix index difference in prod

Author: jmgasper

src/services/ChallengeService.js

@@ -710,7 +710,7 @@ async function searchChallenges(currentUser, criteria) {
               [sortByProp]: {
                 order: sortOrderProp,
                 missing: "_last",
-                unmapped_type: "String",
+                unmapped_type: "text",
               },
             },
       ],