[jdom-interest] Anhother minor comment typo in SAXHandler

[Elliotte Rusty Harold]

Change "an parenthesis" to "a parenthesis"

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| Elliotte Rusty Harold | elharo at metalab.unc.edu | Writer/Programmer |
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|           The XML Bible, 2nd Edition (IDG Books, 2001)             |
|             http://www.cafeconleche.org/books/bible2/              |
|   http://www.amazon.com/exec/obidos/ISBN=0764547607/cafeaulaitA/   |
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