libpq error message fixes

Remove stray paren, capitalize SSL and ALPN.

Author: Kyotaro Horiguchi
Discussion: https://www.postgresql.org/message-id/20240409.104613.1653854506705708036.horikyota.ntt@gmail.com

Author: hlinnaka

src/interfaces/libpq/fe-connect.c

@@ -2927,7 +2927,7 @@ PQconnectPoll(PGconn *conn)
 						if (conn->raddr.addr.ss_family == AF_UNIX)
 						{
 							libpq_append_conn_error(conn,
-													"GSSAPI encryption required but it is not supported over a local socket)");
+													"GSSAPI encryption required but it is not supported over a local socket");
 							goto error_return;
 						}
 						if (conn->gcred == GSS_C_NO_CREDENTIAL)

src/interfaces/libpq/fe-secure-openssl.c

@@ -1246,7 +1246,7 @@ initialize_SSL(PGconn *conn)
 		{
 			char	   *err = SSLerrmessage(ERR_get_error());
 
-			libpq_append_conn_error(conn, "could not set ssl alpn extension: %s", err);
+			libpq_append_conn_error(conn, "could not set SSL ALPN extension: %s", err);
 			SSLerrfree(err);
 			return -1;
 		}