docs: pass on sub-command help

cli/server/add.go

@@ -94,7 +94,7 @@ func createServerDir(name string) (bool, error) {
 var serverAddCommand = cli.Command{
 	Name:    "add",
 	Aliases: []string{"a"},
-	Usage:   "Add a server to your configuration",
+	Usage:   "Add a new server to your configuration",
 	Description: `
 Add a new server to your configuration so that it can be managed by Abra.
 
@@ -121,8 +121,7 @@ You can also pass "--no-domain-checks/-D" flag to use any arbitrary name
 instead of a real domain. The host will be resolved with the "Hostname" entry
 of your ~/.ssh/config. Checks for a valid online domain will be skipped:
 
-  abra server add -D example
-`,
+  abra server add -D example`,
 	Flags: []cli.Flag{
 		internal.DebugFlag,
 		internal.NoInputFlag,

cli/server/prune.go

@@ -31,13 +31,12 @@ var volumesFilterFlag = &cli.BoolFlag{
 var serverPruneCommand = cli.Command{
 	Name:    "prune",
 	Aliases: []string{"p"},
-	Usage:   "Prune a managed server; Runs a docker system prune",
+	Usage:   "Prune resources on a server",
 	Description: `
 Prunes unused containers, networks, and dangling images.
 
-If passing "-v/--volumes" then volumes not connected to a deployed app will
-also be removed. This can result in unwanted data loss if not used carefully.
-	`,
+Use "-v/--volumes" to remove volumes that are not associated with a deployed
+app. This can result in unwanted data loss if not used carefully.`,
 	ArgsUsage: "[<server>]",
 	Flags: []cli.Flag{
 		allFilterFlag,

cli/server/remove.go

@@ -17,12 +17,12 @@ var serverRemoveCommand = cli.Command{
 	Aliases:   []string{"rm"},
 	ArgsUsage: "<server>",
 	Usage:     "Remove a managed server",
-	Description: `Remove a managed server.
+	Description: `
+Remove a managed server.
 
 Abra will remove the internal bookkeeping (~/.abra/servers/...) and underlying
 client connection context. This server will then be lost in time, like tears in
-rain.
-`,
+rain.`,
 	Flags: []cli.Flag{
 		internal.DebugFlag,
 		internal.NoInputFlag,