fix: add missing documentation

Author: mackoj

Sources/SnapshotTesting/Documentation.docc/Articles/ImageSerializationPlugin.md

@@ -47,7 +47,46 @@ The **Image Serialization Plugin** relies on the PluginAPI that is a combination
    - When an image needs to be serialized, the `ImageSerializer` checks the available plugins for one that supports the requested format.
    - If no plugin is found, it defaults to the built-in PNG encoding/decoding methods.
 
-#### Extensibility:
+#### Extensibility
 
-The plugin architecture allows developers to introduce new image formats without modifying the core SnapshotTesting library. By creating a new plugin that conforms to `ImageSerialization` and `SnapshotTestingPlugin`, other formats.
+The plugin architecture allows developers to introduce new image formats without modifying the core SnapshotTesting library. By creating a new plugin that conforms to `ImageSerializationPlugin`, you can easily add support for additional image formats.
 
+Here are a few example plugins demonstrating how to extend the library with new image formats:
+
+- **[Image Serialization Plugin - HEIC](https://github.com/mackoj/swift-snapshot-testing-plugin-heic)**: Enables storing images in the `.heic` format, which reduces file sizes compared to PNG.
+- **[Image Serialization Plugin - WEBP](https://github.com/mackoj/swift-snapshot-testing-plugin-webp)**: Allows storing images in the `.webp` format, which offers better compression than PNG.
+- **[Image Serialization Plugin - JXL](https://github.com/mackoj/swift-snapshot-testing-plugin-jxl)**: Facilitates storing images in the `.jxl` format, which provides superior compression and quality compared to PNG.
+
+## Usage
+
+For example, if you want to use JPEG XL as a new image format for your snapshots, you can follow these steps. This approach applies to any image format as long as you have a plugin that conforms to `ImageSerializationPlugin`.
+
+1. **Add the Dependency**: Include the appropriate image serialization plugin as a dependency in your `Package.swift` file. For JPEG XL, it would look like this:
+
+    ```swift
+    .package(url: "https://github.com/mackoj/swift-snapshot-testing-plugin-jxl.git", revision: "0.0.1"),
+    ```
+
+2. **Link to Your Test Target**: Add the image serialization plugin to your test target's dependencies:
+
+    ```swift
+    .product(name: "JXLImageSerializer", package: "swift-snapshot-testing-plugin-jxl"),
+    ```
+
+3. **Import and Set Up**: In your test file, import the serializer and configure the image format in the `setUp()` method:
+
+    ```swift
+    import JXLImageSerializer
+
+    override class func setUp() {
+        SnapshotTesting.imageFormat = JXLImageSerializer.imageFormat
+    }
+    ```
+
+   Alternatively, you can specify the image format for individual assertions:
+
+    ```swift
+    assertSnapshot(of: label, as: .image(precision: 0.9, format: JXLImageSerializer.imageFormat))
+    ```
+
+This setup demonstrates how to integrate a specific image format plugin. Replace `JXLImageSerializer` with the appropriate plugin and format for other image formats.

Sources/SnapshotTesting/SnapshotTestingConfiguration.swift

@@ -24,6 +24,7 @@ import ImageSerializationPlugin
 /// - Parameters:
 ///   - record: The record mode to use while asserting snapshots.
 ///   - diffTool: The diff tool to use while asserting snapshots.
+///   - imageFormat: The image format used while encoding/decoding images(default: .png).
 ///   - operation: The operation to perform.
 public func withSnapshotTesting<R>(
   record: SnapshotTestingConfiguration.Record? = nil,
@@ -44,7 +45,7 @@ public func withSnapshotTesting<R>(
 
 /// Customizes `assertSnapshot` for the duration of an asynchronous operation.
 ///
-/// See ``withSnapshotTesting(record:diffTool:operation:)-2kuyr`` for more information.
+/// See ``withSnapshotTesting(record:diffTool:imageFormat:operation:)-2kuyr`` for more information.
 public func withSnapshotTesting<R>(
   record: SnapshotTestingConfiguration.Record? = nil,
   diffTool: SnapshotTestingConfiguration.DiffTool? = nil,
@@ -77,6 +78,7 @@ public struct SnapshotTestingConfiguration: Sendable {
   /// See ``Record-swift.struct`` for more information.
   public var record: Record?
 
+  /// The image format to use while encoding/decoding snapshot tests.
   public var imageFormat: ImageSerializationFormat?
 
   public init(