Update README.md

README.md

@@ -4,4 +4,4 @@ During the project lifetime built using GitHub pages using Jekyll.
 
 Flattened to static HTML on 13 March 2024 by John Stack to reduce maintenance overhead of needing to update Jekyll components periodically.
 
-If you ever need to edit, you'll have to do it in each file HTML.
+If you ever need to edit, you'll have to do it in each HTML file.