comment: indexOf returns first occurrence

[0xDatapunk]

zk-kit/packages/imt/src/imt.ts

Lines 152 to 156 in aa02c6d

	/**
	* It returns the index of a leaf. If the leaf does not exist it returns -1.
	* @param leaf A leaf of the tree.
	* @returns The index of the leaf.
	*/

can we add to the comment that It returns the index of the first occurrence of the specified element in the array?