Resignation letter help

[Ngala]

Hey! Tell me what you all think of this....

Dear (manager's name),


It is with sadness that I write to you to tender my resignation from my role as administration manager of (company).


I have enjoyed the role and the people very much and will always have fond memories.


My resignation is effective immediently, as I am on maternity leave.


I wish you, the team and everyone at (company) all the very best for your continued success.


Yours sincerely,


(my name)

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hmm now that I think bout it - i dont really like the third line saying that I am on maternity. Is there another way to word it?