Fix typo

Co-authored-by: JonasVHG <[email protected]>

tests/Offer/IriOfferIdentifierJSONDeserializerTest.php

@@ -53,7 +53,7 @@ public function it_can_deserialize_a_valid_iri_offer_identifier(): void
     /**
      * @test
      */
-    public function it_throws_an_json_exception_when_the_json_is_malformed(): void
+    public function it_throws_a_json_exception_when_the_json_is_malformed(): void
     {
         $json = '{"foo"';