ES-9508 Index data path deprecation URL

Author: lukewhiting

x-pack/plugin/deprecation/src/main/java/org/elasticsearch/xpack/deprecation/IndexDeprecationChecker.java

@@ -212,8 +212,7 @@ private DeprecationIssue checkIndexDataPath(IndexMetadata indexMetadata, Cluster
                 "setting [%s] is deprecated and will be removed in a future version",
                 IndexMetadata.INDEX_DATA_PATH_SETTING.getKey()
             );
-            final String url = "https://www.elastic.co/guide/en/elasticsearch/reference/7.13/"
-                + "breaking-changes-7.13.html#deprecate-shared-data-path-setting";
+            final String url = "https://ela.st/es-deprecation-7-index-data-path";
             final String details = "Found index data path configured. Discontinue use of this setting.";
             return new DeprecationIssue(DeprecationIssue.Level.WARNING, message, url, details, false, null);
         }

x-pack/plugin/deprecation/src/test/java/org/elasticsearch/xpack/deprecation/IndexDeprecationCheckerTests.java

@@ -506,7 +506,7 @@ public void testIndexDataPathSetting() {
             emptyPrecomputedData
         );
         final String expectedUrl =
-            "https://www.elastic.co/guide/en/elasticsearch/reference/7.13/breaking-changes-7.13.html#deprecate-shared-data-path-setting";
+            "https://ela.st/es-deprecation-7-index-data-path";
         assertThat(
             issuesByIndex.get("test"),
             contains(