readme中的vscodevim示例用法有错误，应该使用完整路径而非只是程序名

[Morgal106]

这是vscodevim的文档中说明的

Setting	Description
vim.autoSwitchInputMethod.enable	Boolean denoting whether autoSwitchInputMethod is on/off.
vim.autoSwitchInputMethod.defaultIM	Default input method.
vim.autoSwitchInputMethod.obtainIMCmd	The full path to command to retrieve the current input method key.
vim.autoSwitchInputMethod.switchIMCmd	The full path to command to switch input method, with {im} a placeholder for input method key.

同时默认输入法也不需要是2052，可以用0，切换输入法的命令中也不需要加0

这是正确的用例

  "vim.autoSwitchInputMethod.enable": true,
  "vim.autoSwitchInputMethod.defaultIM": "0",
  "vim.autoSwitchInputMethod.obtainIMCmd": "d:/your/path/AIMSwitcher.exe --imm",
  "vim.autoSwitchInputMethod.switchIMCmd": "d:/your/path/AIMSwitcher.exe --imm {im}",