add: [readme] Added the directory object in the list of available templates

Author: chrisr3d

README.md

@@ -153,6 +153,7 @@ for a specific attribute. An optional **to_ids** boolean field to disable the ID
 - [objects/ddos](https://github.com/MISP/misp-objects/blob/main/objects/ddos/definition.json) - DDoS object describes a current DDoS activity from a specific or/and to a specific target. Type of DDoS can be attached to the object as a taxonomy or using the type field.
 - [objects/device](https://github.com/MISP/misp-objects/blob/main/objects/device/definition.json) - An object to define a device.
 - [objects/diameter-attack](https://github.com/MISP/misp-objects/blob/main/objects/diameter-attack/definition.json) - Attack as seen on the diameter signaling protocol supporting LTE networks.
+- [objects/directory](https://github.com/MISP/misp-objects/blob/main/objects/directory/definition.json) - Directory object describing a directory with meta-information.
 - [objects/dkim](https://github.com/MISP/misp-objects/blob/main/objects/dkim/definition.json) - DomainKeys Identified Mail - DKIM.
 - [objects/dns-record](https://github.com/MISP/misp-objects/blob/main/objects/dns-record/definition.json) - A set of DNS records observed for a specific domain.
 - [objects/domain-crawled](https://github.com/MISP/misp-objects/blob/main/objects/domain-crawled/definition.json) - A domain crawled over time.