docs: update @rstest/coverage-istanbul readme (#572)

Author: 9aoy

packages/coverage-istanbul/README.md

@@ -1,23 +1,28 @@
-# Rslib project
+<picture>
+  <img alt="Rstest Banner" src="https://assets.rspack.rs/rstest/rstest-banner.png">
+</picture>
 
-## Setup
+# @rstest/coverage-istanbul
 
-Install the dependencies:
+[Istanbul](https://istanbul.js.org/) coverage provider for Rstest.
+
+## Install
 
 ```bash
-pnpm install
+npm add @rstest/coverage-istanbul -D
 ```
 
-## Get started
+## Usage
 
-Build the library:
+Enable coverage collection in `rstest.config.ts`:
 
-```bash
-pnpm build
-```
+```ts
+import { defineConfig } from '@rstest/core';
 
-Build the library in watch mode:
-
-```bash
-pnpm dev
+export default defineConfig({
+  coverage: {
+    enabled: true,
+    provider: 'istanbul',
+  },
+});
 ```

packages/coverage-istanbul/package.json

@@ -19,6 +19,9 @@
     "build": "rslib build",
     "dev": "rslib build --watch"
   },
+  "peerDependencies": {
+    "@rstest/core": "workspace:~"
+  },
   "dependencies": {
     "swc-plugin-coverage-instrument": "^0.0.31",
     "istanbul-lib-coverage": "^3.2.2",
@@ -34,5 +37,18 @@
     "@types/istanbul-lib-coverage": "^2.0.6",
     "@types/istanbul-lib-report": "^3.0.3",
     "@types/istanbul-reports": "^3.0.4"
+  },
+  "keywords": [
+    "rstest",
+    "coverage",
+    "istanbul"
+  ],
+  "bugs": {
+    "url": "https://github.com/web-infra-dev/rstest/issues"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/web-infra-dev/rstest",
+    "directory": "packages/coverage-istanbul"
   }
 }