RFR: 8325369: @sealedGraph: Bad link to image for tag on nested classes

[Chen Liang]

Fixes the link to the generated sealed graph svg generated by the sealed graph taglet.

Affected interfaces includes `ClassFile.Option`, `AnnotationValue.OfConstant`, a few nested interfaces in `Signature`, and `TypeAnnotaton.TargetInfo`.

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Commit messages:
 - 8325369: @sealedGraph: Bad link to image for tag on nested classes

Changes: https://git.openjdk.org/jdk/pull/20122/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20122&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325369
  Stats: 11 lines in 1 file changed: 2 ins; 2 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/20122.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20122/head:pull/20122

PR: https://git.openjdk.org/jdk/pull/20122