Fix link to samples

See gh-208

spring-graphql-docs/antora.yml

@@ -29,4 +29,5 @@ asciidoc:
     javadoc: https://docs.spring.io/spring-graphql/docs/{spring-graphql-version}/api
     # version attributes from main build.gradle
     spring-framework-ref-docs: https://docs.spring.io/spring-framework/reference
-    spring-boot-ref-docs: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/reference/html
+    spring-boot-ref-docs: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/reference/html
+    examples-repo: https://github.com/spring-projects/spring-graphql-examples

spring-graphql-docs/modules/ROOT/pages/samples.adoc

@@ -1,4 +1,4 @@
 [[samples]]
 = Samples
 
-Please, see the [spring-graphql-examples](https://github.com/spring-projects/spring-graphql-examples) repository.
+Please, see the {examples-repo}[spring-graphql-examples] repository.

spring-graphql-docs/modules/ROOT/pages/transports.adoc

@@ -203,6 +203,8 @@ one for the WebMVC and one for the WebFlux transports. These help to extract aut
 details from the payload of a `"connection_init"` GraphQL over WebSocket message, authenticate,
 and then propagate the `SecurityContext` to subsequent requests on the WebSocket connection.
 
+TIP: There is a websocket-authentication sample in {examples-repo}[spring-graphql-examples].
+
 
 
 [[server.interception.rsocket]]