Update links

Author: benjie

src/pages/blog/2025-09-04-multioption-inputs-with-oneof/index.mdx

@@ -5,13 +5,13 @@ date: 2025-09-04
 byline: Benjie Gillam
 ---
 
-We’re excited to announce
-**[OneOf Input Objects](https://github.com/graphql/graphql-spec/pull/825)** has
+We’re excited to announce **[OneOf Input
+Objects](https://spec.graphql.org/September2025/#sec-OneOf-Input-Objects)** has
 landed in the GraphQL specification! This enhancement solves a long-standing
 challenge in API design: how to allow users to provide **exactly one** of
 several possible options as input, in a clean and enforceable way. This feature
-is a small change that packs a big return for developers building modern digital
-products with GraphQL.
+is a [small change](https://github.com/graphql/graphql-spec/pull/825) that packs
+a big return for developers building modern digital products with GraphQL.
 
 ## Simplifying entrypoints
 
@@ -137,7 +137,7 @@ Since then there have been a number of reports of success:
 
 ## Availability
 
-`@oneOf` is already available in the following implementations of GraphQL:
+`@oneOf` is already available in at least the following implementations of GraphQL:
 
 - GraphQL.js v16+
 - GraphQL Ruby v2.0.21+