message: Fix cipher table in Java how-to
diff: @@ -259,9 +259,8 @@ The following table summarizes Java implementations of primitives that are
  currently available or planned (the latter are listed in brackets).
  | Primitive | Implementations |
  -| ------------------ | ---------------------------------------------- |
  -| AEAD | AES-EAX, AES-GCM, AES-CTR-HMAC, KMS Envelope, |
  -: : CHACHA20-POLY1305 :
  +| ------------------ | --------------------------------------------------------------- |
  +| AEAD | AES-EAX, AES-GCM, AES-CTR-HMAC, KMS Envelope, CHACHA20-POLY1305 |
  | Streaming AEAD | AES-GCM-HKDF-STREAMING, AES-CTR-HMAC-STREAMING |
  | Deterministic AEAD | AES-SIV |
  | MAC | HMAC-SHA2 |
  