Fixed typo in index rollover docs

Closes #20935

Author: clintongormley

docs/reference/indices/rollover-index.asciidoc

@@ -34,7 +34,7 @@ POST /logs_write/_rollover <2>
 // TEST[s/# Add > 1000 documents to logs-000001/POST _reindex?refresh\n{"source":{"index":"twitter"},"dest":{"index":"logs-000001"}}/]
 <1> Creates an index called `logs-0000001` with the alias `logs_write`.
 <2> If the index pointed to by `logs_write` was created 7 or more days ago, or
-    contains 1,000 or more documents, then the `logs-0002` index is created
+    contains 1,000 or more documents, then the `logs-000002` index is created
     and the `logs_write` alias is updated to point to `logs-000002`.
 
 The above request might return the following response: