-LAdvapi32.lib in buildfile

[boris-kolpackov]

Noticed this error in the submitted 1.11.0 in queue:

error: relative -L directory 'Advapi32.lib\' in '-LC:\\install\\lib -lspdlog -LAdvapi32.lib -lfmt'
  info: while parsing pkg-config --libs C:\install\lib\pkgconfig\libspdlog.shared.pc
  info: while applying rule cxx.link to configure updating build-installed-bpkg\spdlog-tests-1.11.0\spdlog-tests\exe{driver}
  info: while applying rule config.alias to configure updating build-installed-bpkg\spdlog-tests-1.11.0\dir{spdlog-tests\}
  info: while applying rule config.alias to configure updating build-installed-bpkg\dir{spdlog-tests-1.11.0\}

Which I think is caused by this broke fragment in buildfile:

cxx.libs += -LAdvapi32.lib
lib{spdlog}: cxx.export.libs += -LAdvapi32.lib

Should probably be:

cxx.libs += -ladvapi32
lib{spdlog}: cxx.export.libs += -ladvapi32

I am going to push 1.11.0 to public so if you want to fix this, you will need to release a revision.