git: openjdk/jdk-sandbox: classfile-api-branch: fixed Classfile API Javadoc build

[Adam Sotona]

Changeset: 870bff14
Author:    Adam Sotona <asotona at openjdk.org>
Date:      2022-11-04 11:27:54 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/870bff14307e2f40a0de07506b5bed9a9d3147e5

fixed Classfile API Javadoc build

! make/Docs.gmk