Improve wording in docs for #[mul(forward_and_scalar)]

Author: Cannedfood

impl/doc/mul.md

@@ -16,7 +16,7 @@ type in question deriving for this is not implemented.
 NOTE: In case you don't want this behaviour you can add `#[mul(forward)]` in
 addition to `#[derive(Mul)]`. This will instead generate a `Mul` implementation
 with the same semantics as `Add`.
-You can also add `#[mul(forward_and_scalar)]` to implement both, this especially useful for structs that need to be multiplicable by itself and a scalar.
+You can also add `#[mul(forward_and_scalar)]` to implement both to generate both Mul-like and Add-like semantics.
 
 
 

impl/doc/mul_assign.md

@@ -8,7 +8,7 @@ You can add the `#[mul_assign(forward)]` attribute if you don't want the same
 semantics as `Mul`.
 This will instead generate a `MulAssign` implementation with the same semantics
 as `AddAssign`.
-You can add `#[mul_assign(forward_and_scalar)]` to generate both.
+You can add `#[mul_assign(forward_and_scalar)]` to generate both Mul-like and Add-like semantics.