RFR: 4800398: (ch spec) Clarify Channels.newChannel(InputStream) spec [v3]

[Brian Burkhalter]

> Clarify that the `ReadableByteChannel` returned by `Channels::newChannel` is in blocking mode.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  4800398: Revise verbiage update per Reviewer suggestion

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14961/files
  - new: https://git.openjdk.org/jdk/pull/14961/files/dba2d334..4a64cf25

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14961&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14961&range=01-02

  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14961.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14961/head:pull/14961

PR: https://git.openjdk.org/jdk/pull/14961