Say 'clock variable', not '\lstinline!Clock! variable'

chapters/synchronous.tex

@@ -511,11 +511,8 @@ \section{Clock Constructors}\label{clock-constructors}
   \lstinline!!
   \end{example}
 \item
-  Clock variables can be declared in models, blocks, connectors, and
-  records. A \lstinline!Clock! variable can be declared with the prefixes
-  \lstinline!input!, \lstinline!output!, \lstinline!inner!, \lstinline!outer!, but
-  \emph{not} with the prefixes \lstinline!flow!, \lstinline!stream!,
-  \lstinline!discrete!, \lstinline!parameter!, or \lstinline!constant!.
+  Clock variables can be declared in models, blocks, connectors, and records.
+  A clock variable can be declared with the prefixes \lstinline!input!, \lstinline!output!, \lstinline!inner!, \lstinline!outer!, but \emph{not} with the prefixes \lstinline!flow!, \lstinline!stream!, \lstinline!discrete!, \lstinline!parameter!, or \lstinline!constant!.
   \begin{example}
   \lstinline!connector ClockInput = input Clock;!
   \end{example}