aTbRef updated for v8.0.3

[mwra (Mark Anderson)]

See A Tinderbox Reference File

Change log for v8.0.3: https://www.acrobatfaq.com/atbref8/index/ChangeLog/v80331May2019.html

[ComplexPoint (RobTrew)]

Minor literal in:

https://www.acrobatfaq.com/atbref8/index/SyntaxLibrary/Applescript.html

**<.code>**set myAgent to make new agent in myNote

(an intruding period and a literally displayed opening <code> tag)

[mwra (Mark Anderson)]

@ComplexPoint

Minor literal in:

Thanks. Typo fixed & live.