CMake: fix targets missing )

Author: 0xc0170

targets/CMakeLists.txt

@@ -20,7 +20,7 @@ elseif("NUVOTON" IN_LIST MBED_TARGET_LABELS)
 elseif("NXP" IN_LIST MBED_TARGET_LABELS)
     add_subdirectory(TARGET_NXP)
 elseif("Samsung" IN_LIST MBED_TARGET_LABELS)
-    add_subdirectory(TARGET_Samsung
+    add_subdirectory(TARGET_Samsung)
 elseif("Silicon_Labs" IN_LIST MBED_TARGET_LABELS)
     add_subdirectory(TARGET_Silicon_Labs)
 elseif("STM" IN_LIST MBED_TARGET_LABELS)