Update docs/codeql/codeql-language-guides/analyzing-data-flow-in-cpp-new.rst

Co-authored-by: Mathias Vorreiter Pedersen <mathiasvp@github.com>

Author: jketema

docs/codeql/codeql-language-guides/analyzing-data-flow-in-cpp-new.rst

@@ -82,7 +82,7 @@ For example, finding taint propagation from a parameter ``source`` to an express
 
    nodeFrom.asParameter() = source and
    nodeTo.asExpr() = sink and
-   TaintTracking::localTaint(nodeFrom, nodeTo):
+   TaintTracking::localTaint(nodeFrom, nodeTo)
 
 Examples
 ~~~~~~~~