Fix bogus bash binary location

completion/available/fabric-completion.bash

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Bash completion support for Fabric (http://fabfile.org/)
 #

completion/available/rake.completion.bash

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Bash completion support for Rake, Ruby Make.
 
 export COMP_WORDBREAKS=${COMP_WORDBREAKS/\:/}

completion/available/ssh.completion.bash

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Bash completion support for ssh.
 
 export COMP_WORDBREAKS=${COMP_WORDBREAKS/\:/}

completion/available/tmux.completion.bash

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # tmux completion
 # See: http://www.debian-administration.org/articles/317 for how to write more.