Fix typo in spec.md
change `TriggerFilterSourceAndTpe` to `TriggerFilterSourceAndType` in spec.md
@@ -261,9 +261,9 @@ a Channel system that receives and delivers events._
| Field | Type | Description | Constraints |
| ------------- | ------------------------- | -------------------------------------------------- | ----------- |
-| sourceAndType | TriggerFilterSourceAndTpe | A filter that can specific both a source and type. | |
+| sourceAndType | TriggerFilterSourceAndType | A filter that can specific both a source and type. | |
-### TriggerFilterSourceAndTpe
+### TriggerFilterSourceAndType
| Field | Type | Description | Constraints |
| ------ | ------ | --------------------------------------- | ------------------------------------ |
