Fix one-shot CBC documentation (#55432)

* Fix one-shot CBC documentation.

The CBC one-shot documentation made a few references to the ECB
one shots. This removes them and uses consistent language that is
used on the other one-shot methods.

* Change ECB to be consistent

src/libraries/System.Security.Cryptography.Primitives/src/System/Security/Cryptography/SymmetricAlgorithm.cs

@@ -561,7 +561,7 @@ public bool TryDecryptEcb(ReadOnlySpan<byte> ciphertext, Span<byte> destination,
  /// <paramref name="paddingMode" /> is not a valid padding mode.
  /// </exception>
  /// <exception cref="CryptographicException">
- /// <see cref="TryEncryptEcbCore" /> could not encrypt the plaintext.
+ /// The plaintext could not be encrypted successfully.
  /// </exception>
  /// <remarks>
  /// This method's behavior is defined by <see cref="TryEncryptEcbCore" />.
@@ -842,7 +842,7 @@ public bool TryDecryptCbc(
  /// that is exactly <see cref="BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).
  /// </exception>
  /// <exception cref="CryptographicException">
- /// <see cref="TryEncryptEcbCore" /> could not encrypt the plaintext.
+ /// The plaintext could not be encrypted successfully.
  /// </exception>
  /// <remarks>
  /// This method's behavior is defined by <see cref="TryEncryptCbcCore" />.
@@ -872,7 +872,7 @@ public byte[] EncryptCbc(byte[] plaintext, byte[] iv, PaddingMode paddingMode =
  /// that is exactly <see cref="BlockSize" /> in length, converted to bytes (<c>BlockSize / 8</c>).
  /// </exception>
  /// <exception cref="CryptographicException">
- /// <see cref="TryEncryptEcbCore" /> could not encrypt the plaintext.
+ /// The plaintext could not be encrypted successfully.
  /// </exception>
  /// <remarks>
  /// This method's behavior is defined by <see cref="TryEncryptCbcCore" />.