Update reference/tax_classes.v3.yaml

Co-authored-by: Brett Daniels <theromulans@gmail.com>

Author: bc-vincent-zhao

reference/tax_classes.v3.yaml

@@ -100,14 +100,7 @@ paths:
         - Tax Classes
       summary: Update tax classes
       description: |
-        Updates multiple tax classes in a single request. Collection PUT only.
-
-        Request body: non-empty array, max **50** items. Each item must include:
-        - `id`: positive integer (**unique** across the request)
-        - `name`: same length and character rules as create; **unique case-insensitively** across the store.
-
-        Returns **400** if one or more specified classes are not found.
-        Duplicate names → **409**.
+        Updates multiple tax classes in a single request. Max **50** items per request.
       operationId: taxClassBatchPut
 
       requestBody: