Merge pull request #6388 from taosdata/docs/Update-Latest-Feature

[TD-4533] <docs>: describe parameter "size" in "setString" & "setNStr…

documentation20/cn/08.connector/01.java/docs.md

@@ -361,6 +361,7 @@ public void setShort(int columnIndex, ArrayList<Short> list) throws SQLException
 public void setString(int columnIndex, ArrayList<String> list, int size) throws SQLException
 public void setNString(int columnIndex, ArrayList<String> list, int size) throws SQLException
 ```
+其中 setString 和 setNString 都要求用户在 size 参数里声明表定义中对应列的列宽。
 
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