When you click the "Add an equivalent" button on an idiom page, you will get a form that begins with the text:
Use this form to add an idiom that has the same as "IDIOM" meaning, in any language.
This is of course a typo and should be '...the same meaning as "IDIOM", in any language.'
By the way, is there no thread dedicated to tiny website fixes like this one? This almost felt too small to start a whole new thread for...