docs: Improve grammar, typos in introduction.mdx (#3481)

Co-authored-by: Mattuwu <syan4@ualberta.ca>

Author: rmschindler

website/docs/getting-started/introduction.mdx

@@ -2,11 +2,11 @@
 title: 'Getting Started'
 ---
 
-You will need a couple of tools to compile, build, package and debug your Yew application.
-When getting started, we recommend using [Trunk](https://trunkrs.dev/). Trunk is a WASM web application
+You will need a couple of tools to compile, build, package, and debug your Yew application.
+When getting started, we recommend using [Trunk](https://trunkrs.dev/). Trunk is a Wasm web application
 bundler for Rust.
 
-## Installing Rust
+## Install Rust
 
 To install Rust, follow the [official instructions](https://www.rust-lang.org/tools/install).
 
@@ -49,5 +49,5 @@ There are options other than Trunk that may be used for bundling Yew application
 
 ## Next steps
 
-With your development environment setup, you can now either proceed with reading the documentation.
-If you like to learn by getting your hands dirty, we recommend you check out our [tutorial](../tutorial).
+With your development environment set up, you can now either proceed with reading the documentation, or
+if you like to learn by getting your hands dirty, we recommend you check out our [tutorial](../tutorial).