Fixed typo in README.md

README.md

@@ -234,7 +234,7 @@ WebODM by itself is just a user interface (see [below](#odm-nodeodm-webodm-what)
 
 ## Customizing and Extending
 
-Small customizations such as changing the application colors, name, logo, or addying custom CSS/HTML/Javascript can be performed directly from the Customize -- Brand/Theme panels within WebODM. No need to fork or change the code.
+Small customizations such as changing the application colors, name, logo, or adding custom CSS/HTML/Javascript can be performed directly from the Customize -- Brand/Theme panels within WebODM. No need to fork or change the code.
 
 More advanced customizations can be achieved by writing [plugins](https://github.com/OpenDroneMap/WebODM/tree/master/coreplugins). This is the preferred way to add new functionality to WebODM since it requires less effort than maintaining a separate fork. The plugin system features server-side [signals](https://github.com/OpenDroneMap/WebODM/blob/master/app/plugins/signals.py) that can be used to be notified of various events, a ES6/React build system, a dynamic [client-side API](https://github.com/OpenDroneMap/WebODM/tree/master/app/static/app/js/classes/plugins) for adding elements to the UI, a built-in data store, an async task runner, a GRASS engine, hooks to add menu items and functions to rapidly inject CSS, Javascript and Django views.