API Reference: add categories to input params for v1 search

docs/openapi.json

@@ -428,6 +428,15 @@
 						"style": "deepObject",
 						"explode": true
 					},
+					{
+						"name": "categories",
+						"in": "query",
+						"schema": {
+							"type": "array",
+							"items": { "type": "string" }
+						},
+						"description": "Filter memories by categories"
+					},
 					{
 						"name": "org_name",
 						"in": "query",