improve wording

Author: vladak

network.tex

@@ -187,7 +187,7 @@
 \item \emph{domain} -- ,,where the communication will take place'': 
     \begin{itemize}
     \item \texttt{AF\_UNIX} \dots{} local communication within a host, its
-    address is a file name. Also \texttt{AF\_LOCAL}.
+    address is a file name. \texttt{AF\_LOCAL} is a synonym.
     \item \texttt{AF\_INET}, \texttt{AF\_INET6} \dots{} internet communication,
     the address is an IP address and port pair
     \end{itemize}