Update docs/language/ql-training/cpp/program-representation-cpp.rst

Co-Authored-By: shati-patel <42641846+shati-patel@users.noreply.github.com>

Author: jf205

docs/language/ql-training/cpp/program-representation-cpp.rst

@@ -64,7 +64,7 @@ Working with functions
 
 Functions are represented by the Function class. Each declaration or definition of a function is represented by a ``FunctionDeclarationEntry``.
 
-Calls to functions are modeled by CodeQL class ``Call`` and its subclasses:
+Calls to functions are modeled by the CodeQL class ``Call`` and its subclasses:
 
 - ``Call.getTarget()`` gets the declared target of the call; undefined for calls through function pointers
 - ``Function.getACallToThisFunction()`` gets a call to this function