STYLE: Fix typo in displayApplicationInformation function name.

"In native-speaker norms, information is a non-count noun, so the
convention is that information is both singular and plural."
Source: http://english.stackexchange.com/questions/117552/why-does-information-not-have-a-plural-form

git-svn-id: http://svn.slicer.org/Slicer4/trunk@25148 3bd1e089-480b-0410-8dfb-8563597acbee