Apply suggestions from code review

Co-authored-by: Themis Skamagkis <70031729+th-skam@users.noreply.github.com>

Author: hugtalbot

README.md

@@ -58,7 +58,7 @@ Using the control (CTRL) key, you activate GUI shortcuts such as:
 
 Using the SHIFT key, you activate the scene interactions such as the mouse interaction.
 
-Using the SHIT + CTRL keys, you will trigger events on key pressed/released.
+Using the SHIFT + CTRL keys, you will trigger events on key pressed/released.
 
 
 ### Command Line Options