Correct typos in sftp plugin

plugins/sftp/mounter.cpp

@@ -69,7 +69,7 @@ bool Mounter::wait()
     qCDebug(KDECONNECT_PLUGIN_SFTP) << "Starting loop to wait for mount";
 
     MountLoop loop;
-    connect(this, &Mounter::mounted, &loop, &MountLoop::successed);
+    connect(this, &Mounter::mounted, &loop, &MountLoop::succeeded);
     connect(this, &Mounter::failed, &loop, &MountLoop::failed);
     return loop.exec();
 }

plugins/sftp/mountloop.cpp

@@ -35,7 +35,7 @@ void MountLoop::failed()
     exit(1);
 }
 
-void MountLoop::successed()
+void MountLoop::succeeded()
 {
     Q_EMIT result(true);
     exit(0);

plugins/sftp/mountloop.h

@@ -36,7 +36,7 @@ Q_SIGNALS:
     
 public Q_SLOTS:
     void failed();
-    void successed();
+    void succeeded();
     void exitWith(bool status);
 };