Updating doc

Author: OjhaAditi25

README.md

@@ -209,6 +209,7 @@ Any use of third-party trademarks or logos are subject to those third-party's po
 | [spin-button-needs-labelling](docs/rules/spin-button-needs-labelling.md)                                               | Accessibility: SpinButtons must have an accessible label                                                                                                                     | ✅  |    |    |
 | [spin-button-unrecommended-labelling](docs/rules/spin-button-unrecommended-labelling.md)                               | Accessibility: Unrecommended accessibility labelling - SpinButton                                                                                                            | ✅  |    |    |
 | [spinner-needs-labelling](docs/rules/spinner-needs-labelling.md)                                                       | Accessibility: Spinner must have either aria-label or label, aria-live and aria-busy attributes                                                                              | ✅  |    |    |
+| [split-button-needs-labelling](docs/rules/split-button-needs-labelling.md)                                             | Button must have an accessible name.                                                                                                                                         | ✅  |    |    |
 | [switch-needs-labelling](docs/rules/switch-needs-labelling.md)                                                         | Accessibility: Switch must have an accessible label                                                                                                                          | ✅  |    |    |
 | [table-needs-labelling](docs/rules/table-needs-labelling.md)                                                           | Accessibility: Table must have proper labelling and semantic structure for screen readers                                                                                    | ✅  |    |    |
 | [tablist-and-tabs-need-labelling](docs/rules/tablist-and-tabs-need-labelling.md)                                       | This rule aims to ensure that Tabs with icons but no text labels have an accessible name and that Tablist is properly labeled.                                               | ✅  |    |    |

docs/rules/split-button-needs-labelling.md

@@ -1,4 +1,8 @@
-# Accessibility: SplitButton must have text content or accessible name on primaryActionButton prop (`@microsoft/fluentui-jsx-a11y/split-button-needs-labelling`)
+# Button must have an accessible name (`@microsoft/fluentui-jsx-a11y/split-button-needs-labelling`)
+
+💼 This rule is enabled in the ✅ `recommended` config.
+
+<!-- end auto-generated rule header -->
 
 💼 This rule is enabled in the ✅ `recommended` config.