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Add spaces

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

chapters/annotations.tex

@@ -1323,9 +1323,9 @@ \section{Graphical User Interface}\label{annotations-for-the-graphical-user-inte
 This can be used for components that implement mixing of fluids where it is not desired to combine that with the normal stream-connector mixing.
 \begin{lstlisting}[language=modelica]
 model MultiPort
-  parameter Integer n=0 annotation(Dialog(connectorSizing=true));
-  FluidPort_a port_a(redeclare package Medium=Medium);
-  FluidPorts_b ports_b[n](redeclare each package Medium=Medium)
+  parameter Integer n = 0 annotation(Dialog(connectorSizing = true));
+  FluidPort_a port_a(redeclare package Medium = Medium);
+  FluidPorts_b ports_b[n](redeclare each package Medium = Medium)
     annotation (mayOnlyConnectOnce = "Should only connect once per element!");
   $\ldots$
 end MultiPort;