Add the count API to the index table

Author: ankur22

docs/sources/k6/next/javascript-api/k6-browser/locator/_index.md

@@ -21,6 +21,7 @@ Locator can be created with the [page.locator(selector[, options])](https://graf
 | [check([options])](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-browser/locator/check) {{< docs/bwipt id="471" >}}                       | Select the input checkbox.                                                                                              |
 | [clear([options])](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-browser/locator/clear)                                                   | Clears text boxes and input fields of any existing values.                                                              |
 | [click([options])](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-browser/locator/click) {{< docs/bwipt id="471" >}}                       | Mouse click on the chosen element.                                                                                      |
+| [count()](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-browser/locator/count)                                                            | Returns the number of elements matching the selector.                                                                   |
 | [dblclick([options])](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-browser/locator/dblclick) {{< docs/bwipt id="471" >}}                 | Mouse double click on the chosen element.                                                                               |
 | [dispatchEvent(type, eventInit, [options])](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-browser/locator/dispatchevent)                  | Dispatches HTML DOM event types e.g. `'click'`.                                                                         |
 | [fill(value, [options])](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-browser/locator/fill)                                              | Fill an `input`, `textarea` or `contenteditable` element with the provided value.                                       |