Fix completion for aws and kubectl

completion.d/aws

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-if ( which aws && which aws_completer &> /dev/null )
+if ( which aws && which aws_completer ) &> /dev/null
 then
   complete -C aws_completer aws
 fi

completion.d/kubectl

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-if ( which kubectl &> /dev/null )
+if ( which kubectl ) &> /dev/null
 then
   source <(kubectl completion bash)
 fi