Update chapters/scoping.tex

Avoid "looking up"

Co-authored-by: Henrik Tidefelt <henrikt@wolfram.com>

chapters/scoping.tex

@@ -138,7 +138,7 @@ \subsection{Composite Name Lookup}\doublelabel{composite-name-lookup}
 \begin{example}
 Components and classes are part of the same name-space and thus a component cannot
 have the same name as its class or the first part of the class-name as that
-would prevent looking up the name of the class.
+would prevent lookup of the class name.
 \begin{lstlisting}[language=modelica]
 model A
   M M;    // Illegal, component 'M' prevents finding class 'M'