Simple doc clarification where the `toString()` output only conforms to ISO 8601 if the seconds in the offset are zero.
------------- Commit messages: - 8276775: ZonedDateTime/OffsetDateTime.toString return invalid ISO-8601 for years <= 1893 Changes: https://git.openjdk.java.net/jdk/pull/6321/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6321&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8276775 Stats: 7 lines in 2 files changed: 2 ins; 0 del; 5 mod Patch: https://git.openjdk.java.net/jdk/pull/6321.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/6321/head:pull/6321 PR: https://git.openjdk.java.net/jdk/pull/6321
