bpo-38820: Add ssl, hashlib, and hmac changes to whatsnew 3.10 (GH-25817)

Signed-off-by: Christian Heimes <christian@python.org>
diff --git a/Doc/library/ssl.rst b/Doc/library/ssl.rst
index 4d43fa0..afa3d87 100644
--- a/Doc/library/ssl.rst
+++ b/Doc/library/ssl.rst
@@ -1358,6 +1358,10 @@
 
    .. versionadded:: 3.3
 
+   .. deprecated:: 3.10
+
+      NPN has been superseded by ALPN
+
 .. method:: SSLSocket.unwrap()
 
    Performs the SSL shutdown handshake, which removes the TLS layer from the
@@ -1714,6 +1718,10 @@
 
    .. versionadded:: 3.3
 
+   .. deprecated:: 3.10
+
+      NPN has been superseded by ALPN
+
 .. attribute:: SSLContext.sni_callback
 
    Register a callback function that will be called after the TLS Client Hello