Removed double space, hyphen

See @dignifiedquire comments in https://github.com/ipfs/http-api-spec/pull/45

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

core/commands/unixfs/ls.go

@@ -34,13 +34,13 @@ type LsOutput struct {
 
 var LsCmd = &cmds.Command{
 	Helptext: cmds.HelpText{
-		Tagline: "List directory contents for Unix-filesystem objects.",
+		Tagline: "List directory contents for Unix filesystem objects.",
 		ShortDescription: `
 Retrieves the object named by <ipfs-or-ipns-path> and displays the
 contents.
 
-The JSON output contains size information.  For files, the child size
-is the total size of the file contents.  For directories, the child
+The JSON output contains size information. For files, the child size
+is the total size of the file contents. For directories, the child
 size is the IPFS link size.
 `,
 	},