[DOCS] [DOCS] Fix code snippet delimiter for Asciidoctor migration
@@ -93,7 +93,7 @@ response instead of a 404. An `Allow` header is added to the 405 responses
containing the allowed verbs. For example:
[source,text]
--------------------------------------------
+--------------------------------------------
$ curl -v -XPOST 'localhost:9200/my_index/_settings'
* Trying 127.0.0.1...
* TCP_NODELAY set
