Document RuntimeHints testing strategies

Closes gh-29523

framework-docs/framework-docs.gradle

@@ -10,6 +10,14 @@ configurations {
 	asciidoctorExtensions
 }
 
+dependencies {
+	api(project(":spring-context"))
+	api(project(":spring-web"))
+
+	implementation(project(":spring-core-test"))
+	implementation("org.assertj:assertj-core")
+}
+
 jar {
 	enabled = false
 }