RFR: 4397513: (reflect) InvocationHandler.invoke javadoc slightly misleading for "method" parameter

[Chen Liang]

Update occurrences of the not-exactly-correct "interface method" to "invoked method" because 3 Object methods are proxied too. In addition, update the description about the declaring class of the method to be more accurate so that it doesn't clash with the "duplicate method" section in Proxy.

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Commit messages:
 - 4397513: (reflect) InvocationHandler.invoke javadoc slightly misleading for "method" parameter

Changes: https://git.openjdk.org/jdk/pull/28024/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28024&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-4397513
  Stats: 11 lines in 1 file changed: 0 ins; 1 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/28024.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28024/head:pull/28024

PR: https://git.openjdk.org/jdk/pull/28024