Minor change to IESG web page

[Harald Tveit Alvestrand <harald@alvestrand.no>]

Amy, probably....

please add the following to the bottom of the web page 
http://www.ietf.org/iesg.html that you just edited:

Note: As usual in the IETF, the members of the IESG serve as individuals. 
Their affiliations are given for information only.