SHA-3 is now a NIST standard. The following names should be added to the Standard Algorithm Names document (http://docs.oracle.com/javase/8/docs/technotes/guides/security/StandardNames.html):

MessageDigest Algorithms:
SHA3-224, SHA3-256, SHA3-384, SHA3-512

Mac Algorithms:
State that the naming convention being Hmac<digest> and provide HmacSHA3-256 as one example.

Signature Algorithms:
It already has naming convention stated, maybe replace the digest mentioned here for SHA-3.

Cipher Algorithms:
Check the description for PBE ciphers.

In addition, add a table for SHA-3 to the "Algorithm Specifications" and link it to FIPS PUB 202.