pg_createsubscriber: Message style improvements

Refactor some messages, improve quoting.

src/bin/pg_basebackup/pg_createsubscriber.c

@@ -897,8 +897,8 @@ check_publisher(const struct LogicalRepInfo *dbinfo)
 	{
 		pg_log_error("publisher requires %d replication slots, but only %d remain",
 					 num_dbs, max_repslots - cur_repslots);
-		pg_log_error_hint("Consider increasing max_replication_slots to at least %d.",
-						  cur_repslots + num_dbs);
+		pg_log_error_hint("Increase the configuration parameter \"%s\" to at least %d.",
+						  "max_replication_slots", cur_repslots + num_dbs);
 		failed = true;
 	}
 
@@ -906,8 +906,8 @@ check_publisher(const struct LogicalRepInfo *dbinfo)
 	{
 		pg_log_error("publisher requires %d wal sender processes, but only %d remain",
 					 num_dbs, max_walsenders - cur_walsenders);
-		pg_log_error_hint("Consider increasing max_wal_senders to at least %d.",
-						  cur_walsenders + num_dbs);
+		pg_log_error_hint("Increase the configuration parameter \"%s\" to at least %d.",
+						  "max_wal_senders", cur_walsenders + num_dbs);
 		failed = true;
 	}
 
@@ -1003,8 +1003,8 @@ check_subscriber(const struct LogicalRepInfo *dbinfo)
 	{
 		pg_log_error("subscriber requires %d replication slots, but only %d remain",
 					 num_dbs, max_repslots);
-		pg_log_error_hint("Consider increasing max_replication_slots to at least %d.",
-						  num_dbs);
+		pg_log_error_hint("Increase the configuration parameter \"%s\" to at least %d.",
+						  "max_replication_slots", num_dbs);
 		failed = true;
 	}
 
@@ -1012,8 +1012,8 @@ check_subscriber(const struct LogicalRepInfo *dbinfo)
 	{
 		pg_log_error("subscriber requires %d logical replication workers, but only %d remain",
 					 num_dbs, max_lrworkers);
-		pg_log_error_hint("Consider increasing max_logical_replication_workers to at least %d.",
-						  num_dbs);
+		pg_log_error_hint("Increase the configuration parameter \"%s\" to at least %d.",
+						  "max_logical_replication_workers", num_dbs);
 		failed = true;
 	}
 
@@ -1021,8 +1021,8 @@ check_subscriber(const struct LogicalRepInfo *dbinfo)
 	{
 		pg_log_error("subscriber requires %d worker processes, but only %d remain",
 					 num_dbs + 1, max_wprocs);
-		pg_log_error_hint("Consider increasing max_worker_processes to at least %d.",
-						  num_dbs + 1);
+		pg_log_error_hint("Increase the configuration parameter \"%s\" to at least %d.",
+						  "max_worker_processes", num_dbs + 1);
 		failed = true;
 	}