Fix syntax error

Author: Meinersbur

llvm/CMakeLists.txt

@@ -193,7 +193,7 @@ if ("flang" IN_LIST LLVM_ENABLE_PROJECTS)
     if (FLANG_ENABLE_FLANG_RT)
       message(STATUS "Enabling Flang-RT as a dependency of Flang")
       list(APPEND LLVM_ENABLE_RUNTIMES "flang-rt")
-    endf ()
+    endif ()
   endif()
 endif ()