message: explicitely instruct postgres to build english tsvectors
diff: @@ -211,7 +211,7 @@ class Batch {
  type: param(type),
  id: param(id),
  search_doc: param(searchDoc),
  - q: ['to_tsvector(', param(searchDoc), ')'],
  + q: [`to_tsvector('english',`, param(searchDoc), ')'],
  pristine_doc: param(pristineDoc),
  upstream_doc: param(upstreamDoc),
  source: param(sourceId),
  