U see ... Lord Shiva is also represented as Ardhanarishvara (the Supreme one who encompasses the Divine male and female energies - their confluenece leads to Creation) - its not like God is 'he' or 'she' in Hinduism ...
The word Yoni represents the Divine Feminine Energy ! Now muslims will twist this to mean female sex organ because they have assumed in the first place that Shiva Lingam is male sex organ !
As i have told u, that the primary assumption is wrong, that Shiva Lingam is short form for jyothirlingam, the fact that yoni is female sex organ is lie ... GOTIT ?