CMake: add comments

Author: CarterLi

CMakeLists.txt

@@ -1047,7 +1047,7 @@ if(LINUX)
 elseif(ANDROID)
     target_compile_definitions(libfastfetch PUBLIC _GNU_SOURCE _XOPEN_SOURCE _FILE_OFFSET_BITS=64 "$<$<CONFIG:DEBUG>:__BIONIC_FORTIFY>" "$<$<CONFIG:DEBUG>:__BIONIC_FORTIFY_RUNTIME_CHECKS_ENABLED>")
 elseif(WIN32)
-    target_compile_definitions(libfastfetch PUBLIC _GNU_SOURCE WIN32_LEAN_AND_MEAN=1 _WIN32_WINNT=0x0A00)
+    target_compile_definitions(libfastfetch PUBLIC _GNU_SOURCE WIN32_LEAN_AND_MEAN=1 _WIN32_WINNT=0x0A00) # "$<$<CONFIG:Release>:_FORTIFY_SOURCE=3>"
 elseif(APPLE)
     target_compile_definitions(libfastfetch PUBLIC _GNU_SOURCE _XOPEN_SOURCE __STDC_WANT_LIB_EXT1__ _FILE_OFFSET_BITS=64 _DARWIN_C_SOURCE)
 elseif(OpenBSD)