[clapack] Fix clapack-targets.cmake path in clpack-config.cmake

[LilyWangL]

When use find_package to link clapack:

find_package(clapack CONFIG REQUIRED)
target_link_libraries(CMakeProject12 PRIVATE f2c lapack)

That gave this error:

1> CMake Error at F:/0906/vcpkg/packages/clapack_x64-windows/share/clapack/clapack-config.cmake:1 (include):
1>   include could not find load file:
1> 
1>     F:/0906/vcpkg/buildtrees/clapack/x64-windows-rel/clapack-targets.cmake
1> Call Stack (most recent call first):
1>   F:/0906/vcpkg/scripts/buildsystems/vcpkg.cmake(256): (_find_package)
1>   C:\Users\vwangli\source\repos\CMakeProject12\CMakeProject12/CMakeLists.txt(12): (find_package)
1> 
1> 
1> -- Configuring incomplete, errors occurred!
1> See also "C:/Users/vwangli/CMakeBuilds/d96af90b-0d7e-3931-b59f-9f529ce8da16/build/x64-Debug/CMakeFiles/CMakeOutput.log".

Related issue: #7081