eliminate "nip29" alias from "group" command.

git.go

@@ -27,7 +27,7 @@ import (
 
 var git = &cli.Command{
 	Name:  "git",
-	Usage: "git-related operations",
+	Usage: "nip34 and grasp-related operations",
 	Description: `this implements versions of common git commands, like 'clone', 'fetch', 'pull' and 'push', but differently from the normal git commands these never take a remote name, the remote is assumed to what is defined by nip34 events and specified in the (automatically hidden) nip34.json file.
 
 aside from those, there is also:

group.go

@@ -22,8 +22,7 @@ import (
 
 var group = &cli.Command{
 	Name:                      "group",
-	Aliases:                   []string{"nip29"},
-	Usage:                     "group-related operations: info, chat, forum, members, admins, roles",
+	Usage:                     "nip29 group-related operations: info, chat, forum, members, admins, roles",
 	Description:               `manage and interact with Nostr communities (NIP-29). Use "nak group <subcommand> <relay>'<identifier>" where host.tld is the relay and identifier is the group identifier.`,
 	DisableSliceFlagSeparator: true,
 	ArgsUsage:                 "<subcommand> <relay>'<identifier> [flags]",