doc: improve SSL_OP_PRIORITIZE_CHACHA description

The cipher should be spelled "ChaCha20-Poly1305", i.e., with a hyphen
between the encryption and MAC algorithm names. Also change "when client
does" to "when the client does."

PR-URL: #41866
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Mestery <mestery@protonmail.com>

doc/api/crypto.md

@@ -5692,8 +5692,8 @@ See the [list of SSL OP Flags][] for details.
   </tr>
   <tr>
     <td><code>SSL_OP_PRIORITIZE_CHACHA</code></td>
-    <td>Instructs OpenSSL server to prioritize ChaCha20Poly1305
-    when client does.
+    <td>Instructs OpenSSL server to prioritize ChaCha20-Poly1305
+    when the client does.
     This option has no effect if
     <code>SSL_OP_CIPHER_SERVER_PREFERENCE</code>
     is not enabled.</td>