RFR: 8335880: More troubleshooting tips around windows space in path

[Chen Liang]

Context: https://mail.openjdk.org/pipermail/build-dev/2024-July/045586.html

People were confused on a few details around fixing windows space names, including:
1. setshortname can report confusing error message when the directory is in use
2. Many directories can have names set but only Microsoft Visual Studio and Windows Kits need them

Also adds some notes about `jdk` being the exploded image while `images/jdk` is the actual image.

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Commit messages:
 - Update html
 - Doc update on short names

Changes: https://git.openjdk.org/jdk/pull/20197/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20197&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335880
  Stats: 24 lines in 2 files changed: 12 ins; 0 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/20197.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20197/head:pull/20197

PR: https://git.openjdk.org/jdk/pull/20197