Use url_for in templates instead of hard coding URLs

[kevinrue]

I guess "more details required". I don't know what you mean here.

[cyrlop]

In the HTML templates, there are some "hard coded" urls:

• <a href="/"> pointing to the "index" route (or view)
• <a href="/summoner"> pointing to the "summoner_form" route (or view) But it's not a good practice to write the URLs like that directly in the templates, instead we can do:

  <a href="{{url_for('index')}}"><!-- for the index view -->
  <a href="{{url_for('summoner_form')}}"><!-- for the summoner_form view -->

  Then it's easier to change the URLs later if needed (so far in main.py)