[Transform] Change reindex links

Link directly to the Transform reindex migration guide.

Author: prwhelan

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

@@ -102,7 +102,7 @@ private DeprecationIssue oldIndicesCheck(
                 return new DeprecationIssue(
                     DeprecationIssue.Level.CRITICAL,
                     "One or more Transforms write to this index with a compatibility version < " + Version.CURRENT.major + ".0",
-                    "https://ela.st/es-deprecation-9-transform-destination-index",
+                    "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
                     Strings.format(
                         "This index was created in version [%s] and requires action before upgrading to %d.0. The following transforms are "
                             + "configured to write to this index: [%s]. Refer to the migration guide to learn more about how to prepare "
@@ -145,7 +145,7 @@ private DeprecationIssue ignoredOldIndicesCheck(
                 return new DeprecationIssue(
                     DeprecationIssue.Level.WARNING,
                     "One or more Transforms write to this old index with a compatibility version < " + Version.CURRENT.major + ".0",
-                    "https://ela.st/es-deprecation-9-transform-destination-index",
+                    "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
                     Strings.format(
                         "This index was created in version [%s] and will be supported as a read-only index in %d.0. The following "
                             + "transforms are no longer able to write to this index: [%s]. Refer to the migration guide to learn more "

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

@@ -104,7 +104,7 @@ public void testOldTransformIndicesCheck() {
         var expected = new DeprecationIssue(
             DeprecationIssue.Level.CRITICAL,
             "One or more Transforms write to this index with a compatibility version < " + Version.CURRENT.major + ".0",
-            "https://ela.st/es-deprecation-9-transform-destination-index",
+            "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
             "This index was created in version ["
                 + OLD_VERSION.toReleaseVersion()
                 + "] and requires action before upgrading to "
@@ -132,7 +132,7 @@ public void testOldIndicesCheckWithMultipleTransforms() {
         var expected = new DeprecationIssue(
             DeprecationIssue.Level.CRITICAL,
             "One or more Transforms write to this index with a compatibility version < " + Version.CURRENT.major + ".0",
-            "https://ela.st/es-deprecation-9-transform-destination-index",
+            "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
             "This index was created in version ["
                 + OLD_VERSION.toReleaseVersion()
                 + "] and requires action before upgrading to "
@@ -164,7 +164,7 @@ public void testMultipleOldIndicesCheckWithTransforms() {
                 new DeprecationIssue(
                     DeprecationIssue.Level.CRITICAL,
                     "One or more Transforms write to this index with a compatibility version < " + Version.CURRENT.major + ".0",
-                    "https://ela.st/es-deprecation-9-transform-destination-index",
+                    "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
                     "This index was created in version ["
                         + OLD_VERSION.toReleaseVersion()
                         + "] and requires action before upgrading to "
@@ -181,7 +181,7 @@ public void testMultipleOldIndicesCheckWithTransforms() {
                 new DeprecationIssue(
                     DeprecationIssue.Level.CRITICAL,
                     "One or more Transforms write to this index with a compatibility version < " + Version.CURRENT.major + ".0",
-                    "https://ela.st/es-deprecation-9-transform-destination-index",
+                    "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
                     "This index was created in version ["
                         + OLD_VERSION.toReleaseVersion()
                         + "] and requires action before upgrading to "
@@ -340,7 +340,7 @@ public void testOldTransformIndicesIgnoredCheck() {
         var expected = new DeprecationIssue(
             DeprecationIssue.Level.WARNING,
             "One or more Transforms write to this old index with a compatibility version < " + Version.CURRENT.major + ".0",
-            "https://ela.st/es-deprecation-9-transform-destination-index",
+            "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
             "This index was created in version ["
                 + OLD_VERSION.toReleaseVersion()
                 + "] and will be supported as a read-only index in "
@@ -368,7 +368,7 @@ public void testOldIndicesIgnoredCheckWithMultipleTransforms() {
         var expected = new DeprecationIssue(
             DeprecationIssue.Level.WARNING,
             "One or more Transforms write to this old index with a compatibility version < " + Version.CURRENT.major + ".0",
-            "https://ela.st/es-deprecation-9-transform-destination-index",
+            "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
             "This index was created in version ["
                 + OLD_VERSION.toReleaseVersion()
                 + "] and will be supported as a read-only index in "
@@ -400,7 +400,7 @@ public void testMultipleOldIndicesIgnoredCheckWithTransforms() {
                 new DeprecationIssue(
                     DeprecationIssue.Level.WARNING,
                     "One or more Transforms write to this old index with a compatibility version < " + Version.CURRENT.major + ".0",
-                    "https://ela.st/es-deprecation-9-transform-destination-index",
+                    "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
                     "This index was created in version ["
                         + OLD_VERSION.toReleaseVersion()
                         + "] and will be supported as a read-only index in "
@@ -417,7 +417,7 @@ public void testMultipleOldIndicesIgnoredCheckWithTransforms() {
                 new DeprecationIssue(
                     DeprecationIssue.Level.WARNING,
                     "One or more Transforms write to this old index with a compatibility version < " + Version.CURRENT.major + ".0",
-                    "https://ela.st/es-deprecation-9-transform-destination-index",
+                    "https://www.elastic.co/docs/deploy-manage/upgrade/prepare-to-upgrade#transform-migration",
                     "This index was created in version ["
                         + OLD_VERSION.toReleaseVersion()
                         + "] and will be supported as a read-only index in "