Objects/Icinga(Host|Service): fix typo

library/Director/Objects/IcingaHost.php

@@ -384,7 +384,7 @@ class IcingaHost extends IcingaObject
      *
      * @return string
      */
-    protected function renderTempelate_choice_id()
+    protected function renderTemplate_choice_id()
     {
         return '';
     }

library/Director/Objects/IcingaService.php

@@ -373,7 +373,7 @@ class IcingaService extends IcingaObject
         return '';
     }
 
-    protected function renderTempelate_choice_id()
+    protected function renderTemplate_choice_id()
     {
         return '';
     }