[jdk11u-dev] RFR: 8235216: typo in test filename

[Aleksey Shipilev]

Clean backport to match `11.0.13-oracle`.

Additional testing:
 - [x] `tools/javac/file` tests pass

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

Commit messages:
 - Backport 5eef59d22df7b434093ec26ff8e933ca19d1c070

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/219/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=219&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8235216
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/219.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/219/head:pull/219

PR: https://git.openjdk.java.net/jdk11u-dev/pull/219