Manually port policy changes

docs/im/ism/policies.md

@@ -523,11 +523,13 @@ You can use the same options for `ctx` variables as the [notification](#notifica
 
 The following sample template policy is for a rollover use case:
 
-1. Create a policy with an `ism_template` field.
+The following sample template policy is for a rollover use case.
 
-```json
-PUT _opensearch/_ism/policies/rollover_policy
-{
+1. Create a policy with an `ism_template` field:
+
+   ```json
+   PUT _opensearch/_ism/policies/rollover_policy
+   {
      "policy": {
        "description": "Example rollover policy.",
        "default_state": "rollover",
@@ -549,44 +551,44 @@ PUT _opensearch/_ism/policies/rollover_policy
          "priority": 100
        }
      }
-}
-```
+   }
+   ```
 
-You need to specify the `index_patterns` field. If you don't specify a value for `priority`, it defaults to 0.
+   You need to specify the `index_patterns` field. If you don't specify a value for `priority`, it defaults to 0.
 
-1. Set up a template with the `rollover_alias` as `log` :
+2. Set up a template with the `rollover_alias` as `log` :
 
-```json
-PUT _template/ism_rollover
-{
+   ```json
+   PUT _index_template/ism_rollover
+   {
      "index_patterns": ["log*"],
      "settings": {
        "opensearch.index_state_management.rollover_alias": "log"
      }
-}
-```
+   }
+   ```
 
-1. Create an index with the `log` alias:
+3. Create an index with the `log` alias:
 
-```json
-PUT log-000001
-{
+   ```json
+   PUT log-000001
+   {
      "aliases": {
        "log": {
          "is_write_index": true
        }
      }
-}
-```
+   }
+   ```
 
-1. Index a document to trigger the rollover condition:
+4. Index a document to trigger the rollover condition:
 
-```json
-POST log/_doc
-{
+   ```json
+   POST log/_doc
+   {
      "message": "dummy"
-}
-```
+   }
+   ```
 
 ## Example policy