RFR: 8264028: Typo in javax.management.relation.RelationService::purgeRelations

[赵延]

8264028: Typo in javax.management.relation.RelationService::purgeRelations

-------------

Commit messages:
 - update copyright.
 - typo fix.

Changes: https://git.openjdk.java.net/jdk/pull/2765/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2765&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264028
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2765.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2765/head:pull/2765

PR: https://git.openjdk.java.net/jdk/pull/2765