KEYCLOAK-9982 Fix broken link

.travis.yml

@@ -13,4 +13,4 @@ install:
   - echo "travis_fold:end:install folding ends"
 
 script:
-  - mvn test -f tests/pom.xml -D$PROFILE -B
+  - mvn test -f tests/pom.xml -D$PROFILE -B -fae

server_installation/topics/operating-mode/crossdc.adoc

@@ -671,7 +671,7 @@ A bidirectional state transfer will ensure that entities which were created *aft
 Unfortunately, there is no any universal solution to this. Split-brains and network outages are just state, which is usually impossible to be handled 100% correctly with 100% consistent data between sites. In the case of {project_name}, it typically is not a critical issue. In the worst case, users will need to re-login again to their clients, or have the improper count of loginFailures tracked for brute force protection. See the {jdgserver_name}/JGroups documentation for more tips how to deal with split-brain.
 
 The state transfer can be also done on the {jdgserver_name} server side through JMX. The operation name is `pushState`. There are few other operations to monitor status, cancel push state, and so on.
-More info about state transfer is available in the link:{jdgserver_crossdcdocs_link}#state_transfer_between_sites[{jdgserver_name} docs].
+More info about state transfer is available in the link:{jdgserver_crossdcdocs_link}#pushing_state_transfer_to_sites[{jdgserver_name} docs].
 
 
 [[clearcache]]

tests/src/test/java/org/keycloak/documentation/test/utils/LinkUtils.java

@@ -150,6 +150,8 @@ public class LinkUtils {
         for (String ignored : ignoredLinks) {
             if (ignored.endsWith("*") && link.startsWith(ignored.substring(0, ignored.length() - 1))) {
                 return false;
+            } else if (ignored.startsWith("REGEX:") && link.matches(ignored.substring(6))) {
+                return true;
             } else if (ignored.equals(link)) {
                 return false;
             }
@@ -172,6 +174,8 @@ public class LinkUtils {
         for (String valid : ignoredLinkRedirects) {
             if (valid.endsWith("*") && location.startsWith(valid.substring(0, valid.length() - 1))) {
                 return true;
+            } else if (valid.startsWith("REGEX:") && location.matches(valid.substring(6))) {
+                return true;
             } else if (valid.equals(location)) {
                 return true;
             }

tests/src/test/resources/ignored-link-redirects

@@ -12,3 +12,4 @@ http://docs.openshift.com/container-platform/*
 https://access.redhat.com/documentation/en/red-hat-jboss-middleware-for-openshift/3/single/openshift-primer/
 https://access.redhat.com/login?redirectTo=https://access.redhat.com/terms-based-registry
 https://sso.redhat.com/auth/*
+REGEX:https://access.redhat.com/documentation/.*/index