Update docs.md

fix a spelling error

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

@@ -203,7 +203,7 @@ The configuration parameters in properties are as follows:
 * TSDBDriver.PROPERTY_KEY_LOCALE: client locale. The default value is the current system locale.
 * TSDBDriver.PROPERTY_KEY_TIME_ZONE: timezone used by the client. The default value is the current timezone of the system.
 * TSDBDriver.PROPERTY_KEY_BATCH_LOAD: only valid for JDBC-JNI. True if batch ResultSet fetching is enabled; false if row-by-row ResultSet fetching is enabled. Default value is flase.
-* TSDBDriver.PROPERTY_KEY_BATCH_LOAD: only valid for JDBC-RESTful. 'TIMESTAMP' if you want to get a long value in a ResultSet; 'UTC' if you want to get a string in UTC date-time format in a ResultSet; 'STRING' if you want to get a local date-time format string in ResultSet. Default value is 'STRING'.
+* TSDBDriver.PROPERTY_KEY_TIMESTAMP_FORMAT: only valid for JDBC-RESTful. 'TIMESTAMP' if you want to get a long value in a ResultSet; 'UTC' if you want to get a string in UTC date-time format in a ResultSet; 'STRING' if you want to get a local date-time format string in ResultSet. Default value is 'STRING'.
 * TSDBDriver.PROPERTY_KEY_BATCH_ERROR_IGNORE: true if you want to continue executing the rest of the SQL when error happens during execute the executeBatch method in Statement; false, false if the remaining SQL statements are not executed. Default value is false.
 
 #### Establishing a connection with configuration file