Update model/Core/Classes/IndividualElement.md

Co-authored-by: Arthit Suriyawongkul <arthit@gmail.com>
Signed-off-by: Alexios Zavras (zvr) <zvr+git@zvr.gr>

Author: zvr

model/Core/Classes/IndividualElement.md

@@ -10,7 +10,7 @@ Core profile.
 ## Description
 
 Individuals, such as NoneElement and NoAssertionElement, need to reference a
-concrete subclass of ELement.
+concrete subclass of Element.
 
 This class provides the type used by the individuals.