chore: remove typo

src/test/java/org/swmaestro/repl/gifthub/notifications/controller/NotificationControllerTest.java

@@ -92,7 +92,7 @@ void saveDeviceToken() throws Exception {
 
 		// then
 		mockMvc.perform(post("/notifications/device").header("Authorization", "Bearer " + accessToken)
-						.contentType("agipplication/json")
+						.contentType("application/json")
 						.content(objectMapper.writeValueAsString(deviceTokenRequestDto)))
 				.andExpect(status().isOk())
 				.andReturn();