API: Improve cli usage descriptions (#4401)

main/commands/all/api/outbounds_remove.go

@@ -14,13 +14,18 @@ var cmdRemoveOutbounds = &base.Command{
 	Short:       "Remove outbounds",
 	Long: `
 Remove outbounds from Xray.
+
 Arguments:
-	-s, -server 
+
+	-s, -server <server:port>
 		The API server address. Default 127.0.0.1:8080
-	-t, -timeout
-		Timeout seconds to call API. Default 3
+
+	-t, -timeout <seconds>
+		Timeout in seconds for calling API. Default 3
+
 Example:
-    {{.Exec}} {{.LongName}} --server=127.0.0.1:8080 c1.json "tag name"
+
+	{{.Exec}} {{.LongName}} --server=127.0.0.1:8080 c1.json "tag name"
 `,
 	Run: executeRemoveOutbounds,
 }