patch doc

crates/sui-framework/docs/sui/bcs.md

@@ -775,7 +775,7 @@ Peel a vector of <code>u256</code> from serialized bytes.
 
 Peel enum from serialized bytes, where <code>$f</code> takes a <code>tag</code> value and returns
 the corresponding enum variant. Move enums are limited to 127 variants,
-however the tag can be any <code>u64</code> value.
+however the tag can be any <code>u32</code> value.
 
 Example:
 ```rust