Go back to English class. "It's" is a contraction of either "it is" or
"it has". "Its" is the third person possessive. The referenced
sentence uses "it's" as a contraction of "it has" and is correctly
spelled in the message.
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: firstname.lastname@example.org Phone: +1 510 486-8634