SA1629 code fix eats ending semicolon of XML entity

[RenderMichael]

/// <summary>
/// Indicates that this property is a dictionary containing SAML attribute values.
/// </summary>
/// <remarks>This attribute should only be placed on a Dictionary&lt;string, string?&gt;</remarks>
[AttributeUsage(AttributeTargets.Property)]
public sealed class SamlAttributesAttribute : System.Attribute;

The fixer for SA1629 will replace the ; with . instead of appending it, thereby breaking the XML syntax.