Docs: Clarify _American_ English

GUIDELINES.md

@@ -47,7 +47,7 @@ In both cases, _indicators for consensus_ are:
 The user interface must be clear, concise, and easy to use, leaving no room for misunderstandings.
 
 - Define the tags required on an object to trigger the preset.
-- Choose a name, category, and define a list of English search terms.
+- Choose a name, category, and define a list of American English search terms.
 - Check the search functionality to ensure other presets do not cause confusion.
 - Select an icon or start the process to create a new one.
 - Define which fields to show (`fields`) and suggest (`moreFields`), considering the order of fields.