Update model-request.md

Author: XkunW

.github/ISSUE_TEMPLATE/model-request.md

@@ -1,7 +1,7 @@
 ---
 name: Model request
 about: Request for new model weights or model config
-title: New model request for [MODEL_NAME]
+title: New model request for [MODEL_NAME] on [CLUSTER_NAME]
 labels: new model
 assignees: XkunW
 
@@ -11,4 +11,7 @@ assignees: XkunW
 Model weights | Model config | Both
 
 ### Model Name
-Name of the model requested
+Name of the model requested, preferably with model repo URL as well (HuggingFace, ModelScope, etc.)
+
+### Cluster Name
+On which cluster do you need this model