Make API key usage example meaningfully runable (#7243)

public/app/features/org/orgApiKeysCtrl.js

@@ -30,6 +30,7 @@ function (angular) {
 
         var modalScope = $scope.$new(true);
         modalScope.key = result.key;
+        modalScope.rootPath = window.location.origin + $scope.$root.appSubUrl;
 
         $scope.appEvent('show-modal', {
           src: 'public/app/features/org/partials/apikeyModal.html',

public/app/features/org/partials/apikeyModal.html

@@ -27,7 +27,7 @@
 			<br>
 			<br>
 			<pre class="small">
-curl -H "Authorization: Bearer your_key_above" http://your.grafana.com/api/dashboards/db/mydash
+curl -H "Authorization: Bearer {{key}}" {{rootPath}}/api/dashboards/home
 			</pre>
 		</div>