Fix typos (#11914)

substrate/frame/transaction-payment/src/lib.rs

@@ -609,7 +609,7 @@ where
 	/// and user-included tip.
 	///
 	/// The priority is based on the amount of `tip` the user is willing to pay per unit of either
-	/// `weight` or `length`, depending which one is more limitting. For `Operational` extrinsics
+	/// `weight` or `length`, depending which one is more limiting. For `Operational` extrinsics
 	/// we add a "virtual tip" to the calculations.
 	///
 	/// The formula should simply be `tip / bounded_{weight|length}`, but since we are using

substrate/test-utils/runtime/src/lib.rs

@@ -237,7 +237,7 @@ impl sp_runtime::traits::Dispatchable for Extrinsic {
 	type Info = ();
 	type PostInfo = ();
 	fn dispatch(self, _origin: Self::Origin) -> sp_runtime::DispatchResultWithInfo<Self::PostInfo> {
-		panic!("This implemention should not be used for actual dispatch.");
+		panic!("This implementation should not be used for actual dispatch.");
 	}
 }