Fix test for no axe results error

Author: zcolleyz

__tests__/index.test.js

@@ -218,7 +218,9 @@ describe("jest-axe", () => {
       const matcherFunction = toHaveNoViolations.toHaveNoViolations;
       expect(() => {
         matcherFunction({});
-      }).toThrow("No violations found in aXe results object");
+      }).toThrow(
+        "Unexpected aXe results object. No violations property found.\nDid you change the `reporter` in your aXe configuration?"
+      );
     });
 
     it("returns pass as true when no violations are present", () => {