nsis: Fix capitalization of new library names
* src/nsis/inst-kstatusnotifieritem.nsi, src/nsis/inst-libkdepim.nsi, src/nsis/inst-qthttpserver.nsi, src/nsis/uninst-kstatusnotifieritem.nsi, src/nsis/uninst-libkdepim.nsi, src/nsis/uninst-qthttpserver.nsi: Fix capitalization.
This does not cause an error in NSIS but it
makes the files harder to find and created
a failure when trying to sign the files
as extracted from make-msi.guids