Fix one cref that Mono was unhappy with
diff --git a/csharp/src/Google.Protobuf/Preconditions.cs b/csharp/src/Google.Protobuf/Preconditions.cs
index ff3bd0f..2db35ff 100644
--- a/csharp/src/Google.Protobuf/Preconditions.cs
+++ b/csharp/src/Google.Protobuf/Preconditions.cs
@@ -57,7 +57,7 @@
/// return the value to the caller.
/// </summary>
/// <remarks>
- /// This is equivalent to <see cref="CheckNotNull"/> but without the type parameter
+ /// This is equivalent to <see cref="CheckNotNull{T}(T, string)"/> but without the type parameter
/// constraint. In most cases, the constraint is useful to prevent you from calling CheckNotNull
/// with a value type - but it gets in the way if either you want to use it with a nullable
/// value type, or you want to use it with an unconstrained type parameter.