Add resource templates to groupable primitives

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: chughtapan

docs/specification/draft/server/groups.mdx

@@ -7,7 +7,7 @@ title: Groups
 <Info>**Protocol Revision**: draft</Info>
 
 The Model Context Protocol (MCP) allows servers to organize primitives (tools, prompts, resources,
-tasks, and groups themselves) into named collections called groups. Groups provide a natural
+resource templates, tasks, and groups themselves) into named collections called groups. Groups provide a natural
 abstraction for organizing primitives by functional areas, use cases, or access control boundaries.
 
 ## User Interaction Model
@@ -159,6 +159,7 @@ primitive-specific notification:
 - Tools: `notifications/tools/list_changed`
 - Prompts: `notifications/prompts/list_changed`
 - Resources: `notifications/resources/list_changed`
+- Resource Templates: `notifications/resources/list_changed`
 - Tasks: `notifications/tasks/status`
 - Groups: `notifications/groups/list_changed`