Fix whitespace

chapters/annotations.tex

@@ -103,7 +103,6 @@ \subsection{Annotations for Figures\doublelabel{annotations-for-figures}}
 \autoref{plot-curves}, that all share a common x and y axis with properties
 described in \autoref{axis-properties}.
 
-
 The \lstinline!title! of a \lstinline!Figure! shall be non-empty and is
 mandatory, as every figure needs a title for presentation in contexts such as a
 list of figures, and as it is generally hard for tools to automatically generate
@@ -156,7 +155,6 @@ \subsubsection{Plot Curves}\doublelabel{plot-curves}
 end Curve;
 \end{lstlisting}
 
-
 The mandatory \lstinline!x! and \lstinline!y! expressions are restricted to be
 component references refering to a scalar variable or \lstinline!time!.
 
@@ -204,7 +202,6 @@ \subsubsection{Variable Replacements}\doublelabel{variable-replacements}
 \lstinline!label! & \lstinline!Axis! \\ \hline
 \end{longtable}
 
-
 Note that expansion to the final value means that expansion is not restricted to
 parameters and constants, so that values to be shown in a caption can be
 determined during simulation.