Added documentation

FastRng/MultiChannelRng.cs

@@ -151,12 +151,14 @@ public sealed class MultiChannelRng<TNum> : IRandom<TNum>, IDisposable where TNu
 
     private void StopProducer() => this.producerTokenSource.Cancel();
 
+    /// <inheritdoc />
     public void Dispose() => this.StopProducer();
 
     #endregion
 
     #region Implementation of IRandom<TNum>
 
+    /// <inheritdoc />
     public TNum GetUniform(CancellationToken cancel = default)
     {
         var valueTask = this.channelFloats.Reader.ReadAsync(cancel);