Fix bash bug in README.md

README.md

@@ -37,7 +37,7 @@ From inside that directory you can:
     For the Fish shell:
 
     ```sh
-    git clone https://github.com/pyenv/pyenv-virtualenv.git (pyenv root)/plugins/pyenv-virtualenv
+    git clone https://github.com/pyenv/pyenv-virtualenv.git $(pyenv root)/plugins/pyenv-virtualenv
     ```
 
 2. (OPTIONAL) **Add `pyenv virtualenv-init` to your shell** to enable auto-activation of virtualenvs. This is entirely optional but pretty useful. See "Activate virtualenv" below.