8337605: Update description of constants in Float16

[jddarcy]

Align wording or Float16 constants more closely with wording used in Float/Double, add links to corresponding Float/Double constants.

---

Progress

• [x] Change must not contain extraneous whitespace

Issue

• JDK-8337605: Update description of constants in Float16 (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/valhalla.git pull/1191/head:pull/1191
$ git checkout pull/1191

Update a local copy of the PR:
$ git checkout pull/1191
$ git pull https://git.openjdk.org/valhalla.git pull/1191/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1191

View PR using the GUI difftool:
$ git pr show -t 1191

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/valhalla/pull/1191.diff

Webrev

Link to Webrev Comment