fix: Updates subscription path

Simplifies the subscription API endpoint path
by removing the unnecessary "/subscriptions" segment,
resulting in a cleaner and more intuitive API structure.

Author: Antaris

libs/HyperGuestSDK/Api/Pdm/Subscriptions/SubscriptionOperations.cs

@@ -83,7 +83,7 @@ public async Task<HyperGuestResponse<SubscriptionSummary>> CreateSubscriptionAsy
 		var request = new HyperGuestRequest<CreateSubscriptionRequest>(
 			HyperGuestService.Pdm,
 			HttpMethod.Post,
-			path + "/subscriptions/subscribe",
+			path + "/subscribe",
 			rq);
 
 		return await client.FetchAsync<CreateSubscriptionRequest, SubscriptionSummary>(request, cancellationToken)