RFR: 7029: In the event configuration the event name should be renamed label

[Marcus Hirt]

...since most people use JFR 2.0 these days.

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Commit messages:
 - Formatting
 - 7029: In the event configuration the event name should be renamed label

Changes: https://git.openjdk.java.net/jmc/pull/172/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=172&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7029
  Stats: 108 lines in 15 files changed: 33 ins; 0 del; 75 mod
  Patch: https://git.openjdk.java.net/jmc/pull/172.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/172/head:pull/172

PR: https://git.openjdk.java.net/jmc/pull/172