Update langs.model.xml

Duplicate keyword "add_custom_command" is removed.

Close #14026

PowerEditor/src/langs.model.xml

@@ -90,7 +90,7 @@
             <Keywords name="type1">array bool char float int list string unit</Keywords>
         </Language>
         <Language name="cmake" ext="cmake" commentLine="#">
-            <Keywords name="instre1">add_custom_command add_compile_definitions add_compile_options add_custom_command add_custom_target add_definitions add_dependencies add_executable add_library add_link_options add_subdirectory add_test aux_source_directory build_command build_name cmake_minimum_required configure_file create_test_sourcelist else elseif enable_language enable_testing endforeach endfunction endif endmacro endwhile exec_program execute_process export export_library_dependencies file find_file find_library find_package find_path find_program fltk_wrap_ui foreach function get_cmake_property get_directory_property get_filename_component get_source_file_property get_target_property get_test_property if include include_directories include_external_msproject include_regular_expression install install_files install_programs install_targets link_directories link_libraries list load_cache load_command macro make_directory mark_as_advanced math message option output_required_files project qt_wrap_cpp qt_wrap_ui remove remove_definitions separate_arguments set set_directory_properties set_source_files_properties set_target_properties set_tests_properties site_name source_group string subdir_depends subdirs target_compile_definitions target_compile_features target_compile_options target_include_directories target_link_directories target_link_libraries target_link_options target_sources try_compile try_run use_mangled_mesa utility_source variable_requires vtk_make_instantiator vtk_wrap_java vtk_wrap_python vtk_wrap_tcl while write_file</Keywords>
+            <Keywords name="instre1">add_compile_definitions add_compile_options add_custom_command add_custom_target add_definitions add_dependencies add_executable add_library add_link_options add_subdirectory add_test aux_source_directory build_command build_name cmake_minimum_required configure_file create_test_sourcelist else elseif enable_language enable_testing endforeach endfunction endif endmacro endwhile exec_program execute_process export export_library_dependencies file find_file find_library find_package find_path find_program fltk_wrap_ui foreach function get_cmake_property get_directory_property get_filename_component get_source_file_property get_target_property get_test_property if include include_directories include_external_msproject include_regular_expression install install_files install_programs install_targets link_directories link_libraries list load_cache load_command macro make_directory mark_as_advanced math message option output_required_files project qt_wrap_cpp qt_wrap_ui remove remove_definitions separate_arguments set set_directory_properties set_source_files_properties set_target_properties set_tests_properties site_name source_group string subdir_depends subdirs target_compile_definitions target_compile_features target_compile_options target_include_directories target_link_directories target_link_libraries target_link_options target_sources try_compile try_run use_mangled_mesa utility_source variable_requires vtk_make_instantiator vtk_wrap_java vtk_wrap_python vtk_wrap_tcl while write_file</Keywords>
             <Keywords name="type1">ABSOLUTE ABSTRACT ADDITIONAL_MAKE_CLEAN_FILES ALL AND APPEND ARGS ASCII BEFORE CACHE CACHE_VARIABLES CLEAR COMMAND COMMANDS COMMAND_NAME COMMENT COMPARE COMPILE_FLAGS COPYONLY DEFINED DEFINE_SYMBOL DEPENDS DOC EQUAL ESCAPE_QUOTES EXCLUDE EXCLUDE_FROM_ALL EXISTS EXPORT_MACRO EXT EXTRA_INCLUDE FATAL_ERROR FILE FILES FORCE FUNCTION GENERATED GLOB GLOB_RECURSE GREATER GROUP_SIZE HEADER_FILE_ONLY HEADER_LOCATION IMMEDIATE INCLUDES INCLUDE_DIRECTORIES INCLUDE_INTERNALS INCLUDE_REGULAR_EXPRESSION LESS LINK_DIRECTORIES LINK_FLAGS LOCATION MACOSX_BUNDLE MACROS MAIN_DEPENDENCY MAKE_DIRECTORY MATCH MATCHALL MATCHES MODULE NAME NAME_WE NOT NOTEQUAL NO_SYSTEM_PATH OBJECT_DEPENDS OPTIONAL OR OUTPUT OUTPUT_VARIABLE PATH PATHS POST_BUILD POST_INSTALL_SCRIPT PREFIX PREORDER PRE_BUILD PRE_INSTALL_SCRIPT PRE_LINK PROGRAM PROGRAM_ARGS PROPERTIES QUIET RANGE READ REGEX REGULAR_EXPRESSION REPLACE REQUIRED RETURN_VALUE RUNTIME_DIRECTORY SEND_ERROR SHARED SOURCES STATIC STATUS STREQUAL STRGREATER STRLESS SUFFIX TARGET TOLOWER TOUPPER VAR VARIABLES VERSION WIN32 WRAP_EXCLUDE WRITE APPLE MINGW MSYS CYGWIN BORLAND WATCOM MSVC MSVC_IDE MSVC60 MSVC70 MSVC71 MSVC80 CMAKE_COMPILER_2005 OFF ON</Keywords>
             <Keywords name="type2"></Keywords>
         </Language>