RFR: 8253053: Javadoc clean up in Authenticator and BasicAuthenicator

[Patrick Concannon]

Hi,

Could someone please review my doc-only fix for JDK-8253053 - 'Javadoc clean up in Authenticator and BasicAuthenicator'
?

This fix is set of formatting changes intended to clean up the javadoc of the following classes :

`com.sun.net.httpserver.Authenticator`
`com.sun.net.httpserver.Authenticator.Result`
`com.sun.net.httpserver.Authenticator.Failure`
`com.sun.net.httpserver.Authenticator.Success`
`com.sun.net.httpserver.Authenticator.Retry`

`com.sun.net.httpserver.BasicAuthenticator`

This issue is a sub-task of [JDK-8252822](https://bugs.openjdk.java.net/browse/JDK-8252822)

Kind regards,
Patrick

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Commit messages:
 - 8253053: Javadoc clean up in Authenticator and BasicAuthenicator

Changes: https://git.openjdk.java.net/jdk/pull/301/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=301&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253053
  Stats: 11 lines in 2 files changed: 0 ins; 2 del; 9 mod
  Patch: https://git.openjdk.java.net/jdk/pull/301.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/301/head:pull/301

PR: https://git.openjdk.java.net/jdk/pull/301