grouping fix

Author: tarcieri

CHANGELOG.md

@@ -12,7 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
     `to_string_radix_vartime` ([#659])
   - New trait impls: `MulMod` ([#313]), `Div`/`Rem`/`num_traits::Num` ([#720])
 - New `BoxedUint` functionality:
-  - New methods: `sbb`, `wrapping_sub`, `checked_sub` ([#303]), `mul` ([#306]),
+  - New methods: `sbb`/`wrapping_sub`/`checked_sub` ([#303]), `mul` ([#306]),
     `from_be_slice`/`from_le_slice}` ([#307]), `to_be_bytes`/`to_le_bytes` ([#308]),
     `bits` ([#328]), `conditional_select` ([#329]), `shl_vartime` ([#330]), `shr_vartime` ([#331]),
     `rem_vartime` ([#332]), `inv_mod2k`/`bitor` ([#334]), `pow` ([#337]), `inv_mod` ([#341]),