docs: nit

Author: sofinico

ARCs/arc-0089.md

@@ -219,7 +219,7 @@ The Irreversible Flags (`byte`) are defined as follows:
 
 The `MSB` is the leftmost bit in the byte stored in Asset Metadata Box.
 
-The bits `2 ... 6` are reserved for future ARCs (default `False` if not used).
+The bits `3 ... 6` are reserved for future ARCs (default `False` if not used).
 
 The Metadata **MAY** be declared as [ARC-3](./arc-0003.md) compliant on creation
 setting the bit `LSB` in the Irreversible Flags to `True`.