Update Microsoft.Bcl.Cryptography nuget package text

Author: vcsjones

src/libraries/Microsoft.Bcl.Cryptography/src/PACKAGE.md

@@ -18,7 +18,7 @@ internal static class Program
     private static void Main()
     {
         byte[] key = LoadKey();
-        SP800108HmacCounterKdf kbkdf = new(key, HashAlgorithmName.SHA256);
+        using SP800108HmacCounterKdf kbkdf = new(key, HashAlgorithmName.SHA256);
         byte[] derivedKey = kbkdf.DeriveKey("label"u8, "context"u8, derivedKeyLengthInBytes: 32);
     }
 }
@@ -29,6 +29,10 @@ internal static class Program
 The main types provided by this library are:
 
 * `System.Security.Cryptography.AesGcm`
+* `System.Security.Cryptography.CompositeMLDsa`
+* `System.Security.Cryptography.MLDsa`
+* `System.Security.Cryptography.MLKem`
+* `System.Security.Cryptography.SlhDsa`
 * `System.Security.Cryptography.SP800108HmacCounterKdf`
 * `System.Security.Cryptography.X509Certificates.X509CertificateLoader`