Fix documentation

Author: i7an

README.md

@@ -192,9 +192,9 @@ Contact management:
 General:
 
 - Templates CRUD – [`email_templates_api.rb`](examples/email_templates_api.rb)
-- Billing – [`billing_api.rb`](examples/billing_api.rb)
 - Action Mailer – [`action_mailer.rb`](examples/action_mailer.rb)
 - Accounts API – [`accounts_api.rb`](examples/accounts_api.rb)
+- Billing API – [`billing_api.rb`](examples/billing_api.rb)
 
 ## Migration guide v1 → v2
 

lib/mailtrap/billing_api.rb

@@ -8,7 +8,7 @@ class BillingAPI
     include BaseAPI
 
     # Get current billing cycle usage
-    # @return <BillingUsage> Billing usage data for account
+    # @return [BillingUsage] Billing usage data for account
     # @!macro api_errors
     def usage
       response = client.get("/api/accounts/#{account_id}/billing/usage")

spec/mailtrap/billing_api_spec.rb

@@ -6,7 +6,7 @@
   let(:account_id) { ENV.fetch('MAILTRAP_ACCOUNT_ID', 1_111_111) }
   let(:client) { Mailtrap::Client.new(api_key: ENV.fetch('MAILTRAP_API_KEY', 'local-api-key')) }
 
-  describe '#get' do
+  describe '#usage' do
     subject(:usage) { billing.usage }
 
     it 'maps response data to Billing object' do