set each dependency->rule equal to a rule.
void create_dep(char *line, Rule *rule){

    Dependency *dependency;

    strtok(line, " \n"); //returns the target name
    strtok(NULL, " \n"); //returns the colon

    char *curr_tok = strtok(NULL, " \n"); //returns the first dependency name OR NULL if none

    while(curr_tok != NULL){

        dependency = malloc(sizeof(Dependency));

        dependency->next_dep = NULL;
        dependency->rule = initialize_rule(curr_tok);
        curr_tok = strtok(NULL, " \n");
        dependency = dependency->next_dep;
        
    }