feat(cubejs-client-core): modify cubejs-client-core doc

Author: nagulan23

docs/pages/reference/frontend/cubejs-client-core.mdx

@@ -838,7 +838,8 @@ resultSet.tablePivot({
 Name | Type | Description |
 ------ | ------ | ------ |
 aliasSeries? | string[] | Give each series a prefix alias. Should have one entry for each query:measure. See [chartPivot](#result-set-chart-pivot) |
-fillMissingDates? | boolean | null | **`true` by default.** If set to `true`, missing dates on the time dimensions will be filled with `0` for all measures. Note: setting this option to `true` will override any `order` applied to the query. |
+fillMissingDates? | boolean | null | **`true` by default.** If set to `true`, missing dates on the time dimensions will be filled with `fillWithValue` or `0` by default for all measures. Note: setting this option to `true` will override any `order` applied to the query. |
+fillWithValue? | string | null | Value to autofill all the missing date's measure. |
 x? | string[] | Dimensions to put on **x** or **rows** axis. |
 y? | string[] | Dimensions to put on **y** or **columns** axis. |
 
@@ -1055,4 +1056,4 @@ values? | never |
 [link-mdn-max-safe-integer]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER
 
 [ref-query-format]: /product/apis-integrations/rest-api/query-format
-[ref-security]: /product/auth
+[ref-security]: /product/auth