Edit the ls.go description

This should make it a bit easier to read. Cf https://github.com/ipfs/http-api-spec/pull/42#discussion_r53164138

License: MIT
Signed-off-by: Richard Littauer <richard.littauer@gmail.com>

core/commands/ls.go

@@ -33,8 +33,7 @@ var LsCmd = &cmds.Command{
 	Helptext: cmds.HelpText{
 		Tagline: "List links from an object.",
 		ShortDescription: `
-Retrieves the object named by <ipfs-or-ipns-path> and displays the links
-it contains, with the following format:
+Displays the links an IPFS or IPNS object(s) contains, with the following format:
 
   <link base58 hash> <link size in bytes> <link name>
 `,