[code-reflection] RFR: Fix typos

[Mourad Abbay]

This PR fixes typos introduced by #272.

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Commit messages:
 - Fix typos

Changes: https://git.openjdk.org/babylon/pull/300/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=300&range=00
  Stats: 19 lines in 3 files changed: 10 ins; 6 del; 3 mod
  Patch: https://git.openjdk.org/babylon/pull/300.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/300/head:pull/300

PR: https://git.openjdk.org/babylon/pull/300