Updating documentation overview and availability info (#484)

### Checklist:

- [x] Code and documentation should follow the style of the [Style
Guide](https://github.com/apple/swift-testing/blob/main/Documentation/StyleGuide.md).
- [x] If public symbols are renamed or modified, DocC references should
be updated.

Author: medreisbach

Sources/Testing/Testing.docc/Documentation.md

@@ -16,24 +16,29 @@ Create and run tests for your Swift packages and Xcode projects.
 
 ## Overview
 
-`swift-testing` is a modern, open-source testing library for Swift with powerful
-and expressive capabilities. It gives developers more confidence with less code.
-
-### Flexible test organization
-
-Define test functions almost anywhere with a single attribute and group related
-tests into hierarchies using Swift's type system.
-
-### Customizable metadata
-
-Dynamically enable or disable tests depending on runtime conditions, categorize
-tests using tags, and associate bugs directly with the tests that verify their
-fixes or reproduce their problems.
-
-### Scalable execution
-
-Automatically parallelize tests in-process, integrate seamlessly with Swift
-concurrency, and parameterize test functions across wide ranges of inputs.
+With Swift Testing you leverage powerful and expressive capabilities of
+the Swift programming language to develop tests with more confidence and less
+code. The library integrates seamlessly with Swift Package Manager testing
+workflow, supports flexible test organization, customizable metadata, and
+scalable test execution. 
+
+- Define test functions almost anywhere with a single attribute.
+- Group related tests into hierarchies using Swift's type system.
+- Integrate seamlessly with Swift concurrency.
+- Parameterize test functions across wide ranges of inputs.
+- Enable tests dynamically depending
+on runtime conditions. 
+- Parallelize tests in-process.
+- Categorize tests using tags.
+- Associate bugs directly with the tests that verify their fixes or reproduce
+their problems.
+
+#### Related videos
+
+@Links(visualStyle: compactGrid) {
+  - <doc://com.apple.documentation/videos/play/wwdc2024/10179>
+  - <doc://com.apple.documentation/videos/play/wwdc2024/10195>
+}
 
 ## Topics
 

Sources/Testing/Testing.docc/Info.plist

@@ -20,5 +20,23 @@
 	<string>0.1.0</string>
 	<key>CFBundleVersion</key>
 	<string>0.1.0</string>
+	<key>CDAppleDefaultAvailability</key>
+	<dict>
+		<key>Testing</key>
+        <array>
+            <dict>
+                <key>name</key>
+                <string>Xcode</string>
+                <key>version</key>
+                <string>16.0</string>
+            </dict>
+            <dict>
+                <key>name</key>
+                <string>Swift</string>
+                <key>version</key>
+                <string>6.0</string>
+            </dict>
+        </array>
+	</dict>
 </dict>
 </plist>