Update docs/zkapps/o1js/bitwise-operations.mdx

Co-authored-by: Barrie Byron <barrie@o1labs.org>

docs/zkapps/o1js/bitwise-operations.mdx

@@ -146,7 +146,7 @@ leftShift64(field: Field, bits: number) => Field
 
 The `leftShift64()` gadget is a provable equivalent to the [Left shift (<<)](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Left_shift) operator in JavaScript. It moves the bits of a binary number to the left by the specified number of `bits`. Any bits that fall off the left side are discarded. `0`s are padded in from the right. It returns a new `Field` element that is range checked to 64 bits.
 
-The input `Field` should not 64 bits in size. You can use [rangeCheck64](#rangecheck64) to ensure this.
+The input `Field` must not exceed 64 bits in size. You can use [rangeCheck64](#rangecheck64) to ensure this.
 
 Example: