feat(itam): Add model_tag to DeviceType model

ref:#817 #803 closes #581 #582

app/itam/models/device.py

@@ -31,6 +31,7 @@ class DeviceType(
     CenturionModel,
 ):
 
+    model_tag = 'device_type'
 
     class Meta:
 

docs/projects/centurion_erp/user/core/markdown.md

@@ -78,7 +78,7 @@ A Model link is a reference to an item within the database. Supported model link
 | config groups| `$config_group-<id>` |
 | device| `$device-<id>` |
 | devicemodel| `$device_model-<id>` |
-| devicetype| `$-<id>` |
+| devicetype| `$device_type-<id>` |
 | entity | `$entity-<id>` |
 | externallink| `$-<id>` |
 | featureflag| `$feature_flag-<id>` |