Don't add margin for rate limit delays

DiscordChatExporter.Core/Discord/DiscordClient.cs

@@ -36,7 +36,7 @@ public class DiscordClient
         {
             using var request = new HttpRequestMessage(HttpMethod.Get, new Uri(_baseUri, url));
 
-            // Don't validate because token can have special characters
+            // Don't validate because the token can have special characters
             // https://github.com/Tyrrrz/DiscordChatExporter/issues/828
             request.Headers.TryAddWithoutValidation(
                 "Authorization",
@@ -68,7 +68,7 @@ public class DiscordClient
                 .Pipe(s => TimeSpan.FromSeconds(double.Parse(s, CultureInfo.InvariantCulture)));
 
             if (remainingRequestCount <= 0 && resetAfterDelay is not null)
-                await Task.Delay(resetAfterDelay.Value + TimeSpan.FromSeconds(1), innerCancellationToken);
+                await Task.Delay(resetAfterDelay.Value, innerCancellationToken);
 
             return response;
         }, cancellationToken);

DiscordChatExporter.Core/Utils/Http.cs

@@ -41,7 +41,7 @@ public static class Http
                 {
                     // If rate-limited, use retry-after header as the guide
                     if (result.Result.Headers.RetryAfter?.Delta is { } retryAfter)
-                        return retryAfter + TimeSpan.FromSeconds(1);
+                        return retryAfter;
 
                     return TimeSpan.FromSeconds(Math.Pow(2, i) + 1);
                 },