docs: add DROP DICTIONARY SQL reference (#3159)

* docs: add drop dictionary sql reference

* fix

---------

Co-authored-by: baishen <baishen2009@gmail.com>

Author: sundy-li

docs/cn/sql-reference/10-sql-commands/00-ddl/17-dictionary/drop-dictionary.md

@@ -0,0 +1,29 @@
+---
+title: DROP DICTIONARY
+sidebar_position: 2
+---
+
+删除一个字典。
+
+## 语法
+
+```sql
+DROP DICTIONARY [ IF EXISTS ] [ <catalog_name>. ][ <database_name>. ]<dictionary_name>
+```
+
+## 参数
+
+| 参数 | 说明 |
+|-----------|-------------|
+| `IF EXISTS` | 可选。如果字典不存在，则忽略错误。 |
+| `<dictionary_name>` | 字典名称。可以带上 catalog 和 database 限定。 |
+
+## 示例
+
+```sql
+DROP DICTIONARY user_info;
+```
+
+```sql
+DROP DICTIONARY IF EXISTS default.user_info;
+```

docs/cn/sql-reference/10-sql-commands/00-ddl/17-dictionary/index.md

@@ -9,3 +9,5 @@ Dictionary 提供了一种基于键值对的方法，用于从各种外部数据
 | 命令 | 描述 |
 |---------|-------------|
 | [CREATE DICTIONARY](create-dictionary.md) | 创建字典 |
+| [DROP DICTIONARY](drop-dictionary.md) | 删除字典 |
+

docs/en/sql-reference/10-sql-commands/00-ddl/17-dictionary/drop-dictionary.md

@@ -0,0 +1,29 @@
+---
+title: DROP DICTIONARY
+sidebar_position: 2
+---
+
+Deletes a dictionary.
+
+## Syntax
+
+```sql
+DROP DICTIONARY [ IF EXISTS ] [ <catalog_name>. ][ <database_name>. ]<dictionary_name>
+```
+
+## Parameters
+
+| Parameter | Description |
+|-----------|-------------|
+| `IF EXISTS` | Optional. Suppresses the error if the dictionary does not exist. |
+| `<dictionary_name>` | The dictionary name. You can qualify it with catalog and database names. |
+
+## Examples
+
+```sql
+DROP DICTIONARY user_info;
+```
+
+```sql
+DROP DICTIONARY IF EXISTS default.user_info;
+```

docs/en/sql-reference/10-sql-commands/00-ddl/17-dictionary/index.md

@@ -9,3 +9,5 @@ Dictionary provides a key-value approach for reading data from various external
 | Command | Description |
 |---------|-------------|
 | [CREATE DICTIONARY](create-dictionary.md) | Creates a dictionary |
+| [DROP DICTIONARY](drop-dictionary.md) | Deletes a dictionary |
+