Added the description for the version field (modelcontextprotocol#1609)

* Added the description for the version field

* Fix the formatting issue

---------

Co-authored-by: Alex.Akimov <alex.akimov@monite.com>

Author: a-akimov

docs/specification/draft/schema.mdx

@@ -750,6 +750,9 @@ export interface BaseMetadata {
  * @category `initialize`
  */
 export interface Implementation extends BaseMetadata, Icons {
+  /**
+   * The version of this implementation.
+   */
   version: string;
 
   /**