RFR: 8255797: ciReplay: improve documentation of replay file syntax in parser

[Vladimir Kozlov]

On Tue, 3 Nov 2020 08:55:14 GMT, Roberto Castañeda Lozano <rcastanedalo at openjdk.org> wrote:

> Complete and disambiguate the informal specification of the replay file syntax
> given in the ciReplay class implementation.

Good.

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Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1033