README.md in config-5.4.0 vs README.md in config-5.5.1

@@ -426,10 +426,10 @@
 ENV['Settings.section.server'] = 'google.com'
 ```
 
 It won't work with arrays, though.
 
-It is considered an error to use environment variables to simutaneously assign a "flat" value and a multi-level value to a key.
+It is considered an error to use environment variables to simultaneously assign a "flat" value and a multi-level value to a key.
 
 ```ruby
 # Raises an error when settings are loaded
 ENV['BACKEND_DATABASE'] = 'development'
 ENV['BACKEND_DATABASE_USER'] = 'postgres'