Fix typo

src/DBus/GalaDBus.vala

@@ -16,7 +16,7 @@ public interface Dock.GalaDBus : Object {
         }
     }
 
-    public static void open_multitaksing_view () requires (proxy != null) {
+    public static void open_multitasking_view () requires (proxy != null) {
         proxy.perform_action.begin (1);
     }
 }

src/WorkspaceSystem/DynamicWorkspaceItem.vala

@@ -59,7 +59,7 @@ public class Dock.DynamicWorkspaceIcon : ContainerItem, WorkspaceItem {
         var index = WindowSystem.get_default ().active_workspace;
 
         if (index == n_workspaces) {
-            GalaDBus.open_multitaksing_view ();
+            GalaDBus.open_multitasking_view ();
             return;
         }
 

src/WorkspaceSystem/Workspace.vala

@@ -30,7 +30,7 @@ public class Dock.Workspace : GLib.Object {
 
     public void activate () {
         if (is_active_workspace) {
-            GalaDBus.open_multitaksing_view ();
+            GalaDBus.open_multitasking_view ();
         } else {
             WindowSystem.get_default ().desktop_integration.activate_workspace.begin (index);
         }