docs: update an URL [ci skip]

docs/INSTALL_CMAKE

@@ -176,4 +176,4 @@ builds your project:
 [1] https://www.cmake.org/cmake/resources/software.html
 [2] https://www.cmake.org/cmake/help/v3.0/manual/cmake-packages.7.html
 [3] https://www.cmake.org/cmake/help/v3.0/manual/cmake-packages.7.html#package-registry
-[4] http://www.kitware.com/media/html/BuildingExternalProjectsWithCMake2.8.html
+[4] https://blog.kitware.com/wp-content/uploads/2016/01/kitware_quarterly1009.pdf