[jdk21u-dev] RFR: 8352719: Add an equals sign to the modules statement

[Goetz Lindenmaier]

I backport this for parity with 21.0.9-oracle.

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Commit messages:
 - Backport 85a0baf0cb3366d6c16f9aadee123862117f5338

Changes: https://git.openjdk.org/jdk21u-dev/pull/1955/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1955&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8352719
  Stats: 12 lines in 1 file changed: 0 ins; 0 del; 12 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1955.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1955/head:pull/1955

PR: https://git.openjdk.org/jdk21u-dev/pull/1955