Merge pull request #68143 from apple/egorzhdan/cmake-windows-warning

[build] NFC: Fix formatting of a CMake warning on Windows

Author: egorzhdan

CMakeLists.txt

@@ -53,7 +53,7 @@ set(SWIFT_ASM_AVAILABLE YES)
 if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
   if(CMAKE_SYSTEM_PROCESSOR MATCHES "ARM64")
     if(CMAKE_VERSION VERSION_LESS "3.26")
-      message(warning "We can't build assembly language for ARM64 until CMake 3.26")
+      message(WARNING "We can't build assembly language for ARM64 until CMake 3.26")
       set(SWIFT_ASM_AVAILABLE NO)
     else()
       set(SWIFT_ASM_DIALECT ASM_MARMASM)