Add Jwt.Builder Link

Fixes gh-7407

Author: jzheaux

docs/manual/src/docs/asciidoc/_includes/reactive/test.adoc

@@ -234,7 +234,7 @@ client
 	.get().uri("/endpoint").exchange();
 ----
 
-You can also specify a complete `Jwt`, for which `Jwt.Builder` comes quite handy:
+You can also specify a complete `Jwt`, for which `{security-api-url}org/springframework/security/oauth2/jwt/Jwt.Builder.html[Jwt.Builder]` comes quite handy:
 
 [source,java]
 ----

docs/manual/src/docs/asciidoc/_includes/servlet/test/mockmvc.adoc

@@ -364,7 +364,7 @@ mvc
         .with(jwt().authorities(new MyConverter())));
 ----
 
-You can also specify a complete `Jwt`, for which `Jwt.Builder` comes quite handy:
+You can also specify a complete `Jwt`, for which `{security-api-url}org/springframework/security/oauth2/jwt/Jwt.Builder.html[Jwt.Builder]` comes quite handy:
 
 [source,java]
 ----