Fix missing _bash for creating the completion
Somehow this got dropped. Without this click does not
do the completion for bash.
@@ -143,6 +143,6 @@ Add the following to your `~/.bash_profile` or `~/.profile` files:
These files were generated using these commands:
```
-env _PYINFRA_COMPLETE=source pyinfra > pyinfra-complete.sh
+env _PYINFRA_COMPLETE=source_bash pyinfra > pyinfra-complete.sh
env _PYINFRA_COMPLETE=source_zsh pyinfra > pyinfra-complete.zsh
```
