Change single quotes to double quotes

spec/lib/census_api_spec.rb

@@ -1,33 +1,33 @@
-require 'rails_helper'
+require "rails_helper"
 
 describe CensusApi do
   let(:api) { described_class.new }
 
-  describe '#get_document_number_variants' do
+  describe "#get_document_number_variants" do
     it "trims and cleans up entry" do
-      expect(api.get_document_number_variants(2, '  1 2@ 34')).to eq(['1234'])
+      expect(api.get_document_number_variants(2, "  1 2@ 34")).to eq(["1234"])
     end
 
     it "returns only one try for passports & residence cards" do
-      expect(api.get_document_number_variants(2, '1234')).to eq(['1234'])
-      expect(api.get_document_number_variants(3, '1234')).to eq(['1234'])
+      expect(api.get_document_number_variants(2, "1234")).to eq(["1234"])
+      expect(api.get_document_number_variants(3, "1234")).to eq(["1234"])
     end
 
-    it 'takes only the last 8 digits for dnis and resicence cards' do
-      expect(api.get_document_number_variants(1, '543212345678')).to eq(['12345678'])
+    it "takes only the last 8 digits for dnis and resicence cards" do
+      expect(api.get_document_number_variants(1, "543212345678")).to eq(["12345678"])
     end
 
-    it 'tries all the dni variants padding with zeroes' do
-      expect(api.get_document_number_variants(1, '0123456')).to eq(['123456', '0123456', '00123456'])
-      expect(api.get_document_number_variants(1, '00123456')).to eq(['123456', '0123456', '00123456'])
+    it "tries all the dni variants padding with zeroes" do
+      expect(api.get_document_number_variants(1, "0123456")).to eq(["123456", "0123456", "00123456"])
+      expect(api.get_document_number_variants(1, "00123456")).to eq(["123456", "0123456", "00123456"])
     end
 
-    it 'adds upper and lowercase letter when the letter is present' do
-      expect(api.get_document_number_variants(1, '1234567A')).to eq(%w(1234567 01234567 1234567a 1234567A 01234567a 01234567A))
+    it "adds upper and lowercase letter when the letter is present" do
+      expect(api.get_document_number_variants(1, "1234567A")).to eq(%w(1234567 01234567 1234567a 1234567A 01234567a 01234567A))
     end
   end
 
-  describe '#call' do
+  describe "#call" do
     let(:invalid_body) { {get_habita_datos_response: {get_habita_datos_return: {datos_habitante: {}}}} }
     let(:valid_body) do
       {