RFR: (jdk22 port) 7903435: TestDocComments fails on Windows

Fri Oct 20 16:48:08 UTC 2023

Port of https://github.com/openjdk/jextract/pull/106 for jdk 22 branch

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Commit messages:
 - 7903435: TestDocComments fails on Windows

Changes: https://git.openjdk.org/jextract/pull/133/files
 Webrev: https://webrevs.openjdk.org/?repo=jextract&pr=133&range=00
  Stats: 3 lines in 3 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jextract/pull/133.diff
  Fetch: git fetch https://git.openjdk.org/jextract.git pull/133/head:pull/133

PR: https://git.openjdk.org/jextract/pull/133