CMake config error for windbg_cached

[DerJJ]

When Building with

set(BOOST_STACKTRACE_ENABLE_WINDBG OFF CACHE BOOL "Boost.Stacktrace: build boost_stacktrace_windbg" )
set(BOOST_STACKTRACE_ENABLE_WINDBG_CACHED ON CACHE BOOL "Boost.Stacktrace: build boost_stacktrace_windbg_cached" )

cmake reports this error

CMake Error at D:/build/callstackTest/boost/boost/libs/stacktrace/CMakeLists.txt:120 (target_link_libraries):
The link interface of target "boost_stacktrace" contains:

Boost::stacktrace_windbg

but the target was not found.

The culprit seems to be a copy and paste error

elseif(BOOST_STACKTRACE_ENABLE_WINDBG_CACHED)

 target_link_libraries(boost_stacktrace INTERFACE Boost::stacktrace_windbg)

should be:
target_link_libraries(boost_stacktrace INTERFACE Boost::stacktrace_windbg_cached)

Sorry, from my work environment I am not able to create a pull request.