Nav that hides about page in nav

_nav.html

{% unless page.type_name == "Donation (v2)" %}
<nav id="menu" role="navigation">
  {% if request.logged_in? or request.sorta_logged_in? %}
  <a class="user-menu-login desktop-visible" href="{{ request.current_signup.logout_url }}">
    <span>Sign Out</span>
  </a>
  {% else %}
  {% unless request.template == 'user_sessions_new_wide' or request.template == 'user_sessions_new' %}
  <span class="user-menu-login desktop-visible">
    <a href="/forms/user_sessions/new" data-behavior="cache-comment">Sign In</a>
  </span>
  {% endunless %}
  {% endif %}
  <div class="nav-menu">
    <div id="topnav-wrap" class="topnav-wrap width-container">
      <ul id="topnav" class="topnav desktop-nav">
        {% for child in site.root_nav_pages %}
        
        {% if child.slug == "about" %}
        
        {% elsif child.leaf? or child.nav_children.size == 0 %}
        <li {% if child.is_or_is_ancestor_of_current_page? %}class="active"{% endif %}>
          <a href="{{ child.url }}">{{ child.name }}</a>
        </li>
        {% else %}
        <li class="{% if child.is_or_is_ancestor_of_current_page? %}active{% endif %} drop">
          <a href="{{ child.url }}">{{ child.name }} <i class="icon-angle-down"></i></a>
          <ul class="sub">
            {% if site.show_parent_in_nav_dropdown? %}
            <li class="show-parent"><a href="{{ child.url }}">{{ child.name }}</a></li>
            {% else %}
            <li class="show-parent mobile-visible"><a href="{{ child.url }}">{{ child.name }}</a></li>
            {% endif %}
            {% for child2 in child.nav_children %}
            <li><a href="{{ child2.url }}">{{ child2.name }}</a></li>
            {% endfor %}
          </ul>
        </li>
        {% endif %}
        {% endfor %}
      </ul>
    </div>
  </div>
  {% if request.is_sidebar? %}
  <span class="user-menu-button supporter-nav-toggle desktop-visible">
    <i class="icon-nav-gear"></i>
  </span>
  {% endif %}
</nav>

<div class="user-menu clearfix mobile-visible tablet-visible">
  <div class="user-menu-controls left">
    <a href="#menu" class="menu-link"><i class="icon-menu"></i>Menu</a>
  </div>
  <div class="user-menu-controls right">
    <span class="user-menu-button">
      <a href="/forms/user_sessions/new" data-behavior="cache-comment"><i class="icon-user"></i></a>
    </span>
    {% if request.is_sidebar? %}
    <span class="user-menu-button supporter-nav-toggle">
      <i class="icon-nav-gear"></i>
    </span>
    {% endif %}
  </div>
</div>
{% endunless %}