[XeTeX] Current Hebrew month spelled incorrectly in Polyglossia

[Ari Meir Brodsky]

The current Hebrew month is spelled incorrectly when using
\texthebrew{\today} in Polyglossia.  It seems that the error is in line 58
of hebrewcal.sty, where the name השון should be changed to חשון.

Thanks!
-Ari

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Ari M. Brodsky
ari.brodsky at utoronto.ca