docs: fix minor md grammar error (#13345)
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@ -93,10 +93,13 @@ title: TDengine 参数限制与保留关键字
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`TBNAME` 可以视为超级表中一个特殊的标签,代表子表的表名。
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获取一个超级表所有的子表名及相关的标签信息:
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```mysql
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SELECT TBNAME, location FROM meters;
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```
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统计超级表下辖子表数量:
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```mysql
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SELECT COUNT(TBNAME) FROM meters;
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```
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