Update schema.v2.json

Author: github-actions[bot]

static/schema/schema.v2.json

@@ -179,7 +179,7 @@
 						"related_prs": {
 							"type": "boolean",
 							"default": true,
-							"description": "Include possibly related pull requests in the walkthrough."
+							"description": "Related PRs | Include possibly related pull requests in the walkthrough."
 						},
 						"suggested_labels": {
 							"type": "boolean",