Use correct namespaced target name

A quick bug fix following the change to use CMake's namespaces for imported targets. The old non-namespaced target name is used in the GitCondDBConfig.cmake file, and consequently find_package fails as that name no longer exists.

GitCondDB's imported target is now namespaced, so use that name in GitCondDBConfig.cmake.

cmake/GitCondDBConfig.cmake.in

@@ -18,6 +18,6 @@ pkg_check_modules(git2 libgit2 REQUIRED IMPORTED_TARGET)
 include("${CMAKE_CURRENT_LIST_DIR}/GitCondDBFSShim.cmake" OPTIONAL)
 include("${CMAKE_CURRENT_LIST_DIR}/GitCondDBTargets.cmake")
 
-set_target_properties(GitCondDB PROPERTIES
+set_target_properties(GitCondDB::GitCondDB PROPERTIES
   INTERFACE_LINK_LIBRARIES PkgConfig::git2
 )