update choco install command

Author: neel1996

README.md

@@ -29,7 +29,7 @@
 Gitconvex is available on [chocolatey](https://chocolatey.org/). Install [chocolatey](https://chocolatey.org/install) and run the following command to install gitconvex
 
 ```shell
-> choco install gitconvex
+> choco install gitconvex --version=2.1.0
 ```
 
 If you do not prefer `chocolatey` then the [binaries for windows](https://github.com/neel1996/gitconvex/releases/download/2.1.0/gitconvex-v2.1.0-windows.zip) can be downloaded from the [releases](https://github.com/neel1996/gitconvex/releases/tag/2.1.0)