Updates parent child specs

Author: picandocodigo

elasticsearch-model/spec/elasticsearch/model/adapters/active_record/parent_child_spec.rb

@@ -38,7 +38,7 @@
       add_index(:answers, :question_id) unless index_exists?(:answers, :question_id)
 
       clear_tables(Question)
-      ParentChildSearchable.create_index!(force: true, include_type_name: true)
+      ParentChildSearchable.create_index!(force: true)
 
       q_1 = Question.create!(title: 'First Question',  author: 'John')
       q_2 = Question.create!(title: 'Second Question', author: 'Jody')

elasticsearch-model/spec/support/app/parent_and_child_searchable.rb

@@ -26,10 +26,12 @@ def create_index!(options={})
     settings = Question.settings.to_hash.merge Answer.settings.to_hash
     mapping_properties = { join_field: { type: JOIN,
                                          relations: { Question::JOIN_TYPE => Answer::JOIN_TYPE } } }
-
-    merged_properties = mapping_properties.merge(Question.mappings.to_hash[:doc][:properties]).merge(
-        Answer.mappings.to_hash[:doc][:properties])
-    mappings = { doc: { properties: merged_properties }}
+    merged_properties = mapping_properties.merge(
+      Question.mappings.to_hash[:properties]
+    ).merge(
+      Answer.mappings.to_hash[:properties]
+    )
+    mappings = { properties: merged_properties }
 
     client.indices.create({ index: INDEX_NAME,
                             body: {