Update README.md

Author: sbabcoc

README.md

@@ -5,7 +5,7 @@
 
 ### * BREAKING NEWS *
 
-* With the release of **Selenium Foundation** version _28.2.0_, we now provide support for **Appium** sessions via **Seleniun 4 Grid**. The auto-generated configuration connects the **Appium** server to the local grid via a relay node.
+* With the release of **Selenium Foundation** version _28.2.0_, we now provide support for **Appium** sessions via **Selenium 4 Grid**. The auto-generated configuration connects the **Appium** server to the local grid via a relay node.
   * **NOTE**: To properly support **HtmlUnitDriver**, **Appium**, and **Safari**, this release includes new custom slot matcher (Selenium 4) and capabilities matcher (Selenium 3). These matchers are activated via a new setting, which can be easily overridden should the need arise.
 * With the release of **Selenium Foundation** version _28.1.1_, we now provide support for remote **HtmlUnitDriver** sessions with [HtmlUnit Remote](https://github.com/seleniumhq-community/htmlunit-remote). The project unit tests for **Selenium Foundation** have been switched back to running under this "headless" browser.
 * With the release of **Selenium Foundation** version _26.3.4_, automation of Macintosh native applications via the Mac2 engine of Appium is complete. The latest release of the [local-grid-parent](https://github.com/sbabcoc/local-grid-parent) project (_1.5.0_) builds on the [local grid](docs/LocalGridConfiguration.md#introduction) feature of **Selenium Foundation** to launch grid collections that include Mac2 nodes.