[docs] fix min CMake version in docs for macOS

[StrikerRUS]

No exceptions for threadless version.

LightGBM/CMakeLists.txt

Lines 47 to 51 in d107872

	elseif(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
	if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "8.1.0")
	message(FATAL_ERROR "Insufficient AppleClang version")
	endif()
	cmake_minimum_required(VERSION 3.16)

[jameslamb]

looks good, thanks

[github-actions]

This pull request has been automatically locked since there has not been any recent activity since it was closed. To start a new related discussion, open a new issue at https://github.com/microsoft/LightGBM/issues including a reference to this.