RFR: 8285658: Fix two typos in the spec of j.u.random.RandomGenerator

Tue Apr 26 16:51:18 UTC 2022

On Tue, 26 Apr 2022 16:38:37 GMT, Raffaello Giulietti <duke at openjdk.java.net> wrote:

> The spec of the interface `java.util.random.RandomGenerator` is slightly incorrect when it discusses `float` and `double` random values.

This PR fixes the spec and replaces hard-coded literals with static compilation time symbolic expressions.

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PR: https://git.openjdk.java.net/jdk/pull/8404