Deprecation notice for medication-prescribe hook

Added deprecation notice

Author: mattvarghese

docs/hooks/medication-prescribe.md

@@ -6,6 +6,11 @@
 | hookVersion | 1.0
 | Hook maturity | [2 - Tested](../../specification/1.0/#hook-maturity-model)
 
+
+## Deprecation Notice
+
+This hooks is being deprecated in favor of the `order-select` and `order-sign` hooks. The workflow during which this hook fires is unclear and has led to varying implementations and confusion. Also, this hook does not allow for procedure orders even though the workflow usually includes both medication and procedure orders. Therefore, after discussions on Zulip, and the HL7 CDS Committee, the `medication-prescribe` and `order-review` hooks are being deprecated in favor of newly created [`order-select`](../order-select) and [`order-sign`](../order-sign) hooks. Native criteria within the EHR will be relied upon to only fire the new hooks for appropriate medications / procedures. This notice is a placeholder to this effect while CDS Hooks determines the [appropriate process for deprecating hooks](https://github.com/cds-hooks/docs/issues/433).
+
 ## Workflow
 
 The user is in the process of prescribing one or more new medications.