Shortens the line to prevent an extraneous empty line

ncat/docs/ncat.usage.txt

@@ -32,14 +32,15 @@ Options taking a time assume seconds. Append 'ms' for milliseconds,
       --append-output        Append rather than clobber specified output files
       --send-only            Only send data, ignoring received; quit on EOF
       --recv-only            Only receive data, never send anything
+      --no-shutdown          Continue half-duplex when receiving EOF on stdin
       --allow                Allow only given hosts to connect to Ncat
       --allowfile            A file of hosts allowed to connect to Ncat
       --deny                 Deny given hosts from connecting to Ncat
       --denyfile             A file of hosts denied from connecting to Ncat
       --broker               Enable Ncat's connection brokering mode
       --chat                 Start a simple Ncat chat server
       --proxy <addr[:port]>  Specify address of host to proxy through
-      --proxy-type <type>    Specify proxy type ("http" or "socks4" or "socks5")
+      --proxy-type <type>    Specify proxy type ("http", "socks4", "socks5")
       --proxy-auth <auth>    Authenticate with HTTP or SOCKS proxy server
       --ssl                  Connect or listen with SSL
       --ssl-cert             Specify SSL certificate file (PEM) for listening

ncat/ncat_main.c

@@ -645,7 +645,7 @@ int main(int argc, char *argv[])
 "      --broker               Enable Ncat's connection brokering mode\n"
 "      --chat                 Start a simple Ncat chat server\n"
 "      --proxy <addr[:port]>  Specify address of host to proxy through\n"
-"      --proxy-type <type>    Specify proxy type (\"http\" or \"socks4\" or \"socks5\")\n"
+"      --proxy-type <type>    Specify proxy type (\"http\", \"socks4\", \"socks5\")\n"
 "      --proxy-auth <auth>    Authenticate with HTTP or SOCKS proxy server\n"
 
 #ifdef HAVE_OPENSSL