update generated docs

docs/configs.md

@@ -261,6 +261,7 @@ Name | SQL Function(s) | Description | Default Value | Notes
 <a name="sql.expression.RLike"></a>spark.rapids.sql.expression.RLike|`rlike`|RLike|false|This is disabled by default because the implementation is not 100% compatible. See the compatibility guide for more information.|
 <a name="sql.expression.Rand"></a>spark.rapids.sql.expression.Rand|`random`, `rand`|Generate a random column with i.i.d. uniformly distributed values in [0, 1)|true|None|
 <a name="sql.expression.Rank"></a>spark.rapids.sql.expression.Rank|`rank`|Window function that returns the rank value within the aggregation window|true|None|
+<a name="sql.expression.RegExpExtract"></a>spark.rapids.sql.expression.RegExpExtract|`regexp_extract`|RegExpExtract|false|This is disabled by default because the implementation is not 100% compatible. See the compatibility guide for more information.|
 <a name="sql.expression.RegExpReplace"></a>spark.rapids.sql.expression.RegExpReplace|`regexp_replace`|RegExpReplace support for string literal input patterns|false|This is disabled by default because the implementation is not 100% compatible. See the compatibility guide for more information.|
 <a name="sql.expression.Remainder"></a>spark.rapids.sql.expression.Remainder|`%`, `mod`|Remainder or modulo|true|None|
 <a name="sql.expression.Rint"></a>spark.rapids.sql.expression.Rint|`rint`|Rounds up a double value to the nearest double equal to an integer|true|None|