Update bcs.move

Co-authored-by: Todd Nowacki <[email protected]>

crates/sui-framework/packages/sui-framework/sources/bcs.move

@@ -221,7 +221,7 @@ public fun peel_vec_u256(bcs: &mut BCS): vector<u256> {
 
 /// Peel enum from serialized bytes, where `$f` takes a `tag` value and returns
 /// the corresponding enum variant. Move enums are limited to 127 variants,
-/// however the tag can be any `u64` value.
+/// however the tag can be any `u32` value.
 ///
 /// Example:
 /// ```rust