RFR: 7977: Maximum Young Gen Size is displaying the min in GC config Page

[Jean-Philippe Bempel]

Change min to max attribute

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Commit messages:
 - 7977: Maximum Young Gen Size is displaying the min in GC config Page

Changes: https://git.openjdk.org/jmc/pull/452/files
 Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=452&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-7977
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jmc/pull/452.diff
  Fetch: git fetch https://git.openjdk.org/jmc pull/452/head:pull/452

PR: https://git.openjdk.org/jmc/pull/452