**suggestion:** Create a utility function for href string manipulation

[Shloimy15e]

          **suggestion:** Create a utility function for href string manipulation

The string manipulation for creating href values is repeated and could be more efficient. Consider creating a utility function to handle this transformation consistently across the application.

import { createHrefString } from '../utils/stringUtils';

const hrefTopic = props.isSubtopic
  ? createHrefString(props.subtopic.topic_name)
  : createHrefString(props.topic.name);

Originally posted by @sourcery-ai[bot] in #31 (comment)