Adjust tests 2

test/init.bats

@@ -73,7 +73,7 @@ EOS
   assert_success
   assert_output <<EOS
 while set index (contains -i -- "${TMP}/pyenv/plugins/pyenv-virtualenv/shims" $PATH)
-set -eg PATH[$index]; end; set -e index
+set -eg PATH[\$index]; end; set -e index
 set -gx PATH '${TMP}/pyenv/plugins/pyenv-virtualenv/shims' \$PATH;
 set -gx PYENV_VIRTUALENV_INIT 1;
 function _pyenv_virtualenv_hook --on-event fish_prompt;