es_mapping.yml: fix deprecated mapping type

https://www.elastic.co/guide/en/elasticsearch/reference/6.7/removal-of-types.html#_schedule_for_removal_of_mapping_types

it gives a really unhelpful error otherwise, oof.

create_es.sh

@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+set -e
 
 # create indices named "nyaa" and "sukebei", these are hardcoded
 curl -v -XPUT 'localhost:9200/nyaa?pretty' -H"Content-Type: application/yaml" --data-binary @es_mapping.yml

es_mapping.yml

@@ -83,7 +83,6 @@ settings:
 mappings:
   # disable elasticsearch's "helpful" autoschema
   dynamic: false
-  torrent:
   properties:
     id:
       type: long