Merge pull request #22098 from taosdata/doc/remveFullText

remove fulltext index readme 

docs/en/12-taos-sql/27-index.md

@@ -4,12 +4,12 @@ sidebar_label: Indexing
 description: This document describes the SQL statements related to indexing in TDengine.
 ---
 
-TDengine supports SMA and FULLTEXT indexing.
+TDengine supports SMA and tag indexing.
 
 ## Create an Index
 
 ```sql
-CREATE FULLTEXT INDEX index_name ON tb_name (col_name [, col_name] ...)
+CREATE INDEX index_name ON tb_name (col_name [, col_name] ...)
 
 CREATE SMA INDEX index_name ON tb_name index_option
 
@@ -46,10 +46,6 @@ SELECT _wstart,_wend,_wduration,max(c2),min(c1) FROM st1 INTERVAL(5m,10s) SLIDIN
 ALTER LOCAL 'querySmaOptimize' '0';
 ```
 
-### FULLTEXT Indexing
-
-Creates a text index for the specified column. FULLTEXT indexing improves performance for queries with text filtering. The index_option syntax is not supported for FULLTEXT indexing. FULLTEXT indexing is supported for JSON tag columns only. Multiple columns cannot be indexed together. However, separate indices can be created for each column.
-
 ## Delete an Index
 
 ```sql

docs/zh/12-taos-sql/27-index.md

@@ -4,12 +4,13 @@ title: 索引
 description: 索引功能的使用细节
 ---
 
-TDengine 从 3.0.0.0 版本开始引入了索引功能，支持 SMA 索引和 FULLTEXT 索引。
+TDengine 从 3.0.0.0 版本开始引入了索引功能，支持 SMA 索引和 tag 索引。
 
 ## 创建索引
 
 ```sql
-CREATE FULLTEXT INDEX index_name ON tb_name (col_name [, col_name] ...)
+
+CREATE INDEX index_name ON tb_name index_option
 
 CREATE SMA INDEX index_name ON tb_name index_option
 
@@ -46,10 +47,6 @@ SELECT _wstart,_wend,_wduration,max(c2),min(c1) FROM st1 INTERVAL(5m,10s) SLIDIN
 ALTER LOCAL 'querySmaOptimize' '0'; 
 ```
 
-### FULLTEXT 索引
-
-对指定列建立文本索引，可以提升含有文本过滤的查询的性能。FULLTEXT 索引不支持 index_option 语法。现阶段只支持对 JSON 类型的标签列创建 FULLTEXT 索引。不支持多列联合索引，但可以为每个列分布创建 FULLTEXT 索引。
-
 ## 删除索引
 
 ```sql