Make kubectl help strings consistent

pkg/kubectl/cmd/attach.go

@@ -59,7 +59,7 @@ func NewCmdAttach(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer)
 	}
 	cmd := &cobra.Command{
 		Use:     "attach POD -c CONTAINER",
-		Short:   "Attach to a running container.",
+		Short:   "Attach to a running container",
 		Long:    "Attach to a process that is already running inside an existing container.",
 		Example: attach_example,
 		Run: func(cmd *cobra.Command, args []string) {