RFR: 8319607: FFM: Review the language in the FFM documentation [v2]

[Per Minborg]

> This PR proposes to improve the language used in the FFM specification. There is a relatively small number of corrections.
> 
> One peculiarity with the English language is the distinction between "that" (to be used in a restrictive clause) and "which" (to be used in a non-restrictive clause). Here is a reference: https://preply.com/en/blog/when-to-use-which-or-that-the-most-common-cases
> 
> Another source for updates is the difference between BE and AE where most of us Europeans were taught BE but we should use AE in the specifications.

Per Minborg has updated the pull request incrementally with one additional commit since the last revision:

  Fix after comments

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/16536/files
  - new: https://git.openjdk.org/jdk/pull/16536/files/387d5929..315162e8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16536&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16536&range=00-01

  Stats: 3 lines in 2 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/16536.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16536/head:pull/16536

PR: https://git.openjdk.org/jdk/pull/16536