fix: rename Wasmi usage guide title (#1073)

* rename Wasmi usage guide title

* better title

* refactor certain paragraphs

docs/usage.md

@@ -1,8 +1,6 @@
-# How to use Wasmi as Rust Dependency?
+# Wasmi Usage Guide
 
-This document briefly explains how to use Wasmi as a Rust dependency and get the most out of it performance-wise.
-
-Refer to the [Wasmi crate docs](https://docs.rs/wasmi) to learn how to use the [Wasmi crate](https://crates.io/crates/wasmi) as library. Reading the API docs provide a good overview of Wasmi's potential and possibilities.
+This document briefly explains how to properly use Wasmi and get the most out of it performance-wise.
 
 ## Usage: As CLI Installation
 
@@ -26,6 +24,8 @@ Where
 
 ## Usage: As Rust Dependency
 
+Refer to the [Wasmi crate docs](https://docs.rs/wasmi) to learn how to use the [Wasmi crate](https://crates.io/crates/wasmi) as Rust dependency. Reading the API docs provide a good overview of Wasmi's potential and possibilities.
+
 ### Cargo
 
 Incorporate Wasmi in your Rust application in the usual way by adding it to your projects `Cargo.toml` file: