fix: update README.md

Author: josetaira

README.md

@@ -16,7 +16,7 @@ Add a reference to `contextMenu.js`. In your app config add `ui.bootstrap.contex
 ## Context Menu Settings
 - `context-menu-on` - (Default: 'contextmenu') A comma-separated string literal containing the events that will trigger the context menu to appear.
 - `context-menu-empty-text` - (Default: 'empty') An angular expression containing the string to be used when the context menu is empty
-- `context-menu-class` - A string literal containing a custom class to be added to the context menu (The <ul> elements)
+- `context-menu-class` - A string literal containing a custom class to be added to the context menu (The &lt;ul&gt; elements)
 - `allow-event-propagation` - (Default: false) A boolean determining whether to allow event propagation. Note that if you set this to true, and don’t catch it with something else the browser’s context menu will be shown on top of this library’s context menu.
 - `model` - (See Model Attribute below)