[readme] 需要在readme中提示用户将此处修改为x86配置 | need to remind users to adjust here to x86

[mysterywolf]

需要在readme中提示用户将此处修改为x86配置，以适配自己的PC平台. 否则可能会出现报错.

[kisvegabor]

I'm on Linux and don't use Visual Studio. Could you add PR with a screenshot?

[MouriNaruto]

I will add some notices in the readme.

Because the simulator project support arm64, Visual Studio will choose arm64 in the first time because of the alphabetical order.

Kenji Mouri

[MouriNaruto]

@mysterywolf @kisvegabor

I have added the notice. https://github.com/lvgl/lv_sim_visual_studio/commit/39bcda3f1c98f8145dd80d5acc73b535b403640b

Kenji Mouri

[mysterywolf]

Thank you~