Since we are all working together in a global community, I think this error deserves a pass. Spelling and Grammar moderation would be more suitable for maybe a linguistics forum. Yes?
I'm truly at how many people around the globe make the effort to provide support in the English language.
As a native American, I will be the first to admit that we are the lazy ones when it comes to learning not only a second, but third language like many of our global partners and colleagues.
Just to clarify, I can fully understand someone mistaking the difference between the two words based on the definitions:
Ensure = Make certain that (something) shall occur or be the case.
Insure = To make certain especially by taking necessary measures and precautions.
So if everything else is functioning besides your broken links, you are ahead of the game.