fix bad await

src/Server/Controllers/PaymentController.cs

@@ -28,7 +28,7 @@ namespace BoredCareers.Controllers {
         public async Task<IActionResult> paymentWebhook() {
             try {
                 string body = await new StreamReader(Request.Body).ReadToEndAsync();
-                await _paymentService.ValidatePurchase(body, Request.Headers["Stripe-Signature"].ToString());
+                _paymentService.ValidatePurchase(body, Request.Headers["Stripe-Signature"].ToString());
                 return Ok();
             } catch (Exception ex) {
                 return NotFound(ex.ToString());