Merge pull request #55 from TAMULib/indexing-status-code

switch to 425 too early status response when indexing

src/main/java/edu/tamu/scholars/middleware/discovery/controller/IndexingController.java

@@ -19,7 +19,7 @@ public class IndexingController {
   @GetMapping("/isIndexing")
   public ResponseEntity<Boolean>  isIndexing() {
     Boolean isIndexing = indexService.isIndexing();
-    return isIndexing ? ResponseEntity.status(HttpStatus.ACCEPTED).body(isIndexing) : ResponseEntity.ok(isIndexing);
+    return isIndexing ? ResponseEntity.status(HttpStatus.TOO_EARLY).body(isIndexing) : ResponseEntity.ok(isIndexing);
   }
 
 }