docs: the configuration type of the WASM plugin can be an object. (#12251)

Author: xuruidong

docs/en/latest/wasm.md

@@ -102,7 +102,7 @@ Attributes below can be configured in the plugin:
 
 | Name           | Type                 | Requirement | Default        | Valid                                                                      | Description                                                                                                                                         |
 | --------------------------------------| ------------| -------------- | -------- | --------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- |
-|  conf         | string | required |   |  != ""      | the plugin ctx configuration which can be fetched via Proxy Wasm SDK |
+|  conf         | string or object | required |   |  != "" and != {}     | the plugin ctx configuration which can be fetched via Proxy Wasm SDK |
 
 Here is the mapping between Proxy Wasm callbacks and APISIX's phases:
 

docs/zh/latest/wasm.md

@@ -63,7 +63,7 @@ curl -i http://127.0.0.1:9180/apisix/admin/routes/1 -H "X-API-KEY: $admin_key" -
 
 |名称 | 类型 | 要求 | 默认 | 有效 | 描述|
 |---|---|---|---|---|---|
-|conf|字符串 | 必填 | 无 | 不得为空 |插件 ctx 配置，可以通过 Proxy Wasm SDK 获取|
+|conf|字符串或结构体 | 必填 | 无 | 不得为空 |插件 ctx 配置，可以通过 Proxy Wasm SDK 获取|
 
 这里是 Proxy Wasm 回调与 APISIX 阶段的映射：