RFR: 8347428: Avoid using secret-key in specifications [v2]

[Ben Perez]

> There are quite some places in API specifications that use the term "secret-key". This is not a formal term. Consider replacing them with "secret key".

Ben Perez has updated the pull request incrementally with one additional commit since the last revision:

  fixed copyright dates

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/23342/files
  - new: https://git.openjdk.org/jdk/pull/23342/files/df074e30..fba8575b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23342&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23342&range=00-01

  Stats: 6 lines in 5 files changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/23342.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23342/head:pull/23342

PR: https://git.openjdk.org/jdk/pull/23342