Fix clippy errors

Author: cmichi

crates/primitives/src/key.rs

@@ -62,9 +62,9 @@ impl KeyComposer {
     ///
     /// 1. Compute the ASCII byte representation of `struct_name` and call it `S`.
     /// 1. If `variant_name` is not empty then computes the ASCII byte representation and
-    /// call it `V`. 1. Compute the ASCII byte representation of `field_name` and call
-    /// it `F`. 1. Concatenate (`S` and `F`) or (`S`, `V` and `F`) using `::` as
-    /// separator and call it `C`. 1. The `XXH32` hash of `C` is the storage key.
+    ///    call it `V`. 1. Compute the ASCII byte representation of `field_name` and call
+    ///    it `F`. 1. Concatenate (`S` and `F`) or (`S`, `V` and `F`) using `::` as
+    ///    separator and call it `C`. 1. The `XXH32` hash of `C` is the storage key.
     ///
     /// # Note
     ///