PATH but not Path is used for windows environment variable

[safeizxc]

the executable on windows uses PATH but not Path as the environment variable, then on some case-sensitive terminal, like windows termianl, it will cause problem like below:

C:\Tools\volt>volt-v0.3.7-windows-amd64.exe get tpope/vim-surround
[INFO] Full building C:\Users\zxc\vimfiles\pack\volt\opt directory ...
[ERROR] could not build C:\Users\zxc\vimfiles\pack\volt: exec: "vim.exe": executable file not found in %PATH%