Fix heading formatting in README.md

Updated headings in the README file to improve formatting and clarity.

Author: blwatkins

README.md

@@ -15,17 +15,17 @@ Write the project's source code in the `src/` directory.
 The `src/sketch.ts` file provided contains a simple p5.js program with a black background and a white circle.
 This file will be used as the entry point for webpack.
 
-## Installation
+## > Installation
 
 ```shell
 npm install
 ```
 
 `npm install` will install all the dependencies required to run this project.
 
-## Linting
+## > Linting
 
-### Linting TypeScript
+### >> Linting TypeScript
 
 ```shell
 npm run lint:ts
@@ -34,7 +34,7 @@ npm run lint:ts
 `npm run lint:ts` will lint the TypeScript source code using ESLint, identifying syntactic and stylistic errors based on a configured set of rules.
 TypeScript linting configurations and rules can be found, edited, and updated in `eslint.config.ts.mjs`.
 
-### Linting JavaScript
+### >> Linting JavaScript
 
 ```shell
 npm run lint:js
@@ -43,9 +43,9 @@ npm run lint:js
 `npm run lint:js` will lint the JavaScript configuration files using ESLint, identifying syntactic and stylistic errors based on a configured set of rules.
 JavaScript linting configurations and rules can be found, edited, and updated in `eslint.config.js.mjs`.
 
-## Building
+## > Building
 
-### Development Mode
+### >> Development Mode
 
 ```shell
 npm run build:dev
@@ -55,7 +55,7 @@ npm run build:dev
 This should identify any compiler errors present in your source code.
 The webpack build configuration can be found in `webpack.config.cjs`.
 
-### Production Mode
+### >> Production Mode
 
 ```shell
 npm run build:prod
@@ -64,7 +64,7 @@ npm run build:prod
 `npm run build:prod` will bundle your sketch in production mode using webpack.
 The webpack build configuration can be found in `webpack.config.cjs`.
 
-### Development Mode with Single File Output
+### >> Development Mode with Single File Output
 
 ```shell
 npm run build:dev:single-file
@@ -75,7 +75,7 @@ The resulting bundle will have your source code and all its dependencies in a si
 This should identify any compiler errors present in your source code.
 The webpack build configuration can be found in `webpack.single-file.config.cjs`.
 
-### Production Mode with Single File Output
+### >> Production Mode with Single File Output
 
 ```shell
 npm run build:prod:single-file
@@ -85,33 +85,33 @@ npm run build:prod:single-file
 The resulting bundle will have your source code and all its dependencies in a single JavaScript file.
 The webpack build configuration can be found in `webpack.single-file.config.cjs`.
 
-## Serving
+## > Serving
 
-### Serving the Development Bundle
+### >> Serving the Development Bundle
 
 ```shell
 npm run dev
 ```
 
 `npm run dev` will bundle the sketch in development mode, start a localhost development server (`127.0.0.1:8080`), and open a new browser window for the `index.html` file bundled with the compiled sketch.
 
-### Serving the Development Bundle with Single File Output
+### >> Serving the Development Bundle with Single File Output
 
 ```shell
 npm run dev:single-file
 ```
 
 `npm run dev:single-file` will bundle the sketch in development mode with `webpack.single-file.config.cjs`, start a localhost development server (`127.0.0.1:8080`), and open a new browser window for the `index.html` file bundled with the compiled sketch.
 
-### Serving the Production Bundle
+### >> Serving the Production Bundle
 
 ```shell
 npm run dev:prod
 ```
 
 `npm run dev:prod` will bundle the sketch in production mode, start a localhost development server (`127.0.0.1:8080`), and open a new browser window for the `index.html` file bundled with the compiled sketch.
 
-### Serving the Production Bundle with Single File Output
+### >> Serving the Production Bundle with Single File Output
 
 ```shell
 npm run dev:prod:single-file