DEV: Use run_successfully matcher in service specs

spec/support/service_matchers.rb

@@ -10,8 +10,24 @@ module ServiceMatchers
     end
 
     def failure_message
+      message = "Expected the service to succeed but it failed."
+      error_message_with_inspection(message)
+    end
+
+    def failure_message_when_negated
+      message = "Expected the service to fail but it succeeded."
+      error_message_with_inspection(message)
+    end
+
+    def description
+      "run the service successfully"
+    end
+
+    private
+
+    def error_message_with_inspection(message)
       inspector = StepsInspector.new(result)
-      "Expected to run the service sucessfully but failed:\n\n#{inspector.inspect}\n\n#{inspector.error}"
+      "#{message}\n\n#{inspector.inspect}\n\n#{inspector.error}"
     end
   end
 
@@ -137,7 +153,7 @@ module ServiceMatchers
     FailStep.new(name)
   end
 
-  def run_service_successfully
+  def run_successfully
     RunServiceSuccessfully.new
   end