fix: Auto-install script not working on fish shell (#422)

* Fix install command example

* Update README.md

Author: conorbros

README.md

@@ -43,7 +43,7 @@ Some of the defining features that make this project unique are:
 ### Mac OS / Linux
 
 ```bash
-bash <(curl -s https://raw.githubusercontent.com/doom-neovim/doom-nvim/main/tools/install.sh)
+curl -s https://raw.githubusercontent.com/doom-neovim/doom-nvim/main/tools/install.sh | sh
 ```
 
 ### Manual (Mac OS / Linux)