Update OpenAPIKit entry (#697)

Author: mattpolzin

src/content/tools/openapikit.md

@@ -1,6 +1,8 @@
 ---
 name: OpenAPIKit
-description: Codable Swift types that encode to- and decode from OpenAPI 3.0.x and OpenAPI 3.1.x Documents and their components.
+description: |
+  Codable Swift types that encode to- and decode from OpenAPI 3.0.x and OpenAPI
+  3.1.x Documents and their components.
 categories:
   - parsers
   - schema-validators
@@ -13,5 +15,15 @@ oasVersions:
   v2: false
   v3: true
   v3_1: true
-  v3_2: false
+  v3_2: true
 ---
+
+## Overview
+
+OpenAPIKit is a library that provides Codable implementations for (almost) all of
+OpenAPI's structures. If your end goal is to read OpenAPI files into Swift,
+write OpenAPI files from Swift, or build Swift tooling on top of the OpenAPI
+specification, OpenAPIKit is a great foundation to build upon.
+
+See the full [OpenAPIKit documentation](https://github.com/mattpolzin/OpenAPIKit/blob/main/README.md) for
+more information.