fixed review comments to keep it in line with SDK guidelines

Author: srbhaakamai

linode_api4/objects/monitor.py

@@ -345,9 +345,9 @@ class AlertDefinition(DerivedBase):
         "type": Property(AlertType),
         "status": Property(),
         "has_more_resources": Property(),
-        "rule_criteria": Property(RuleCriteria),
-        "trigger_conditions": Property(TriggerConditions),
-        "alert_channels": Property(List[AlertChannelEnvelope]),
+        "rule_criteria": Property(mutable=True),
+        "trigger_conditions": Property(mutable=True),
+        "alert_channels": Property(mutable=True),
         "created": Property(is_datetime=True),
         "updated": Property(is_datetime=True),
         "updated_by": Property(),
@@ -415,10 +415,10 @@ class AlertChannel(Base):
     properties = {
         "id": Property(identifier=True),
         "label": Property(),
-        "type": Property(False, AlertType),
+        "type": Property(),
         "channel_type": Property(),
-        "alerts": Property(False, List[Alert]),
-        "content": Property(False, ChannelContent),
+        "alerts": Property(),
+        "content": Property(),
         "created": Property(is_datetime=True),
         "updated": Property(is_datetime=True),
         "created_by": Property(),