Added missing prefix to function

knowledge-space-database.php

 <?php
 
 
-$SPACES_TABLE = get_table_name("spaces");
-$NODES_TABLE = get_table_name("nodes");
-$NODETYPES_TABLE = get_table_name("nodetypes");
-$LINKS_TABLE = get_table_name("links");
-$REFERENCES_TABLE = get_table_name("references");
+$SPACES_TABLE = ks_get_table_name("spaces");
+$NODES_TABLE = ks_get_table_name("nodes");
+$NODETYPES_TABLE = ks_get_table_name("nodetypes");
+$LINKS_TABLE = ks_get_table_name("links");
+$REFERENCES_TABLE = ks_get_table_name("references");
 
 
 global $ks_db_version;
 $ks_db_version = '1.0';
 
-function get_table_name($table)
+function ks_get_table_name($table)
 {
 	global $wpdb;
 	return $wpdb->prefix . "ks_" . $table;