Fix typo in installation of Geant4

projects/CMakeLists.txt

@@ -371,7 +371,7 @@ LCGPackage_add(
 #  URL http://geant4.cern.ch/support/source/geant4.${Geant4_native_version}.tar.gz
   URL http://service-spi.web.cern.ch/service-spi/external/tarFiles/geant4.${Geant4_native_version}.tar.gz
   CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
-             -DCMAKE_INSTALL_PREFIX=<INSTALL_DI
+             -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
              -DGEANT4_USE_GDML=ON
              -DXERCESC_ROOT_DIR=${XercesC_home}
              -DGEANT4_USE_SYSTEM_CLHEP=OFF