Update README.md

typo

README.md

@@ -15,7 +15,7 @@ Four quick steps to get you started:
 ![RGB Diagram](img/vs-code-python-setup.png)
 
 4. Within Visual Studio Code select menu item: File > New Text File
-    * Click the blue _"Select a language"_ and start to type _python_, then select/click the _Python_ option that appears (as showb above)
+    * Click the blue _"Select a language"_ and start to type _python_, then select/click the _Python_ option that appears (as shown above)
         - If _"Python"_ is not offered as a choice, press **Ctrl+Shift+X** and then search for _"Python"_ and press install
     * It may then say _"Do you want to install the recommended extensions for Python?"_ (_from Marketplace_ or similar)
     * Select the first option from the list on the left. Click blue _"Install"_ text and wait ~1 minute whilst everything is set up for you