Update path filtering, remove root node

app/controllers/moirai/pages_controller.rb

@@ -4,17 +4,17 @@ module Moirai
   class PagesController < ApplicationController
     def index
       i18n_file_paths = I18n.load_path
-      file_contents = i18n_file_paths.map { |path| [path, parse_file(path)] }.to_h
+      yml_file_paths = i18n_file_paths.select { |path| path.end_with?(".yml") || path.end_with?(".yaml") }
+      file_contents = yml_file_paths.map { |path| [path, parse_file(path)] }.to_h
       render json: file_contents
     end
 
     private
 
     def parse_file(path)
-      is_yml_path = path.end_with?(".yml") || path.end_with?(".yaml")
-      return unless is_yml_path
       yaml_content = YAML.load_file(path)
-      flatten_hash(yaml_content)
+      root_key = yaml_content.keys.first
+      flatten_hash(yaml_content[root_key])
     end
 
     def flatten_hash(hash, parent_key = '', result = {})