[lworld] RFR: Fix header format for build setup

[David Simms]

Breaks testing, tests in question don't exist in mainline

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Commit messages:
 - Fix header format for build setup

Changes: https://git.openjdk.java.net/valhalla/pull/554/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=554&range=00
  Stats: 3 lines in 3 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/554.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/554/head:pull/554

PR: https://git.openjdk.java.net/valhalla/pull/554