RFR: 7903678: regression: jextract tool is broken in the latest early access build

[Athijegannathan Sundararajan]

double-quote should be used instead of single-quote around the value of --add-options option.

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Commit messages:
 - 7903678: regression: jextract tool is broken in the latest early access build

Changes: https://git.openjdk.org/jextract/pull/223/files
 Webrev: https://webrevs.openjdk.org/?repo=jextract&pr=223&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7903678
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jextract/pull/223.diff
  Fetch: git fetch https://git.openjdk.org/jextract.git pull/223/head:pull/223

PR: https://git.openjdk.org/jextract/pull/223