使用XSLT更新元素的文本

I have a xml look like this:

我有一个像这样的xml:

<san>
<sanUrunler>
<UrunStokDurum>Stokta Değil</UrunStokDurum>
</sanUrunler>
<sanUrunler>
<UrunStokDurum>Stokta Var</UrunStokDurum>
</sanUrunler>
</san>
<