Fix nits in anchor-buttons JS

- Typo in space key
- Add blank line to EOF
- Remove trailing whitespace

javascripts/govuk/anchor-buttons.js

@@ -1,21 +1,21 @@
-// javascript 'shim' to trigger the click event of element(s) 
+// javascript 'shim' to trigger the click event of element(s)
 // when the space key is pressed.
-// 
+//
 // usage instructions:
 // GOVUK.anchorButtons.init();
-// 
+//
 // If you want to customise the shim you can pass in a custom configuration
-// object with your own selector for the target elements and addional keyup 
+// object with your own selector for the target elements and addional keyup
 // codes if there becomes a need to do so. For example:
-// GOVUK.anchorButtons.init({ selector: '[role="button"]' }); 
+// GOVUK.anchorButtons.init({ selector: '[role="button"]' });
 (function(global) {
-  "use strict"; 
-       
+  "use strict";
+
   var $ = global.jQuery;
-  var GOVUK = global.GOVUK || {};  
+  var GOVUK = global.GOVUK || {};
 
   GOVUK.anchorButtons = {
-    
+
     // default configuration that can be overridden by passing object as second parameter to module
     config: {
       // the target element(s) to attach the shim event to
@@ -25,37 +25,37 @@
         32 // spacekey
       ],
     },
-    
+
     // event behaviour (not a typical anonymous function for resuse if needed)
     triggerClickOnTarget: function triggerClickOnTarget(event) {
-      var code = event.charCode || event.keyCode; 
-      // if the keyCode/charCode from this event is in the keycodes array then 
+      var code = event.charCode || event.keyCode;
+      // if the keyCode/charCode from this event is in the keycodes array then
       if ($.inArray(code, this.config.keycodes) !== -1) {
         event.preventDefault();
         // trigger the target's click event
         $(event.target).trigger("click");
       }
     },
 
-    // By default this will find all anchors with role attribute set to 
-    // 'button' and will trigger their click event when the spaceky (32) is pressed.
+    // By default this will find all anchors with role attribute set to
+    // 'button' and will trigger their click event when the space key (32) is pressed.
     // @method init
     // @param  {Object}   customConfig                object to override default configuration
     //         {String}   customConfig.selector       a selector for the elements to be 'clicked'
     //         {Array}    customConfig.keycodes       an array of javascript keycode values to match against that when pressed will trigger the click
-    init: function init(customConfig) { 
+    init: function init(customConfig) {
       // extend the default config with any custom attributes passed in
       this.config = $.extend(this.config, customConfig);
       // if we have found elements then:
       if($(this.config.selector).length > 0) {
         // listen to 'document' for keyup event on the elements and fire the triggerClickOnTarget
         $(document).on('keyup', this.config.selector, this.triggerClickOnTarget.bind(this));
-      }    
+      }
     }
 
   };
-  
+
   // hand back to global
   global.GOVUK = GOVUK;
-      
-})(window);
+
+})(window);