Typo fix.

README.md

@@ -84,7 +84,7 @@ Some of the scenes can be rendered into a texture and shown inside the monitor s
 * "Dune" : https://youtu.be/NTZRHCQ-pqc (The monologue of Princess Irulan, told by the Amiga)
 * "The Boing Ball" : https://youtu.be/X6Xv8NsnVPs (How did the Amiga Corp team managed to create an audio sample for the Boing ball, when the OS wasn't even ready for production ?)
 
-Several other episodes where initially planned ... maybe some day :)
+Several other episodes were initially planned ... maybe some day :)
 * "Ghost'n'Goblins" (from the Arcade to the Amiga)
 * "Athanor 2" (making of, interview of its creators)