adding aria-label to search form

opentech/public/search/templates/search/search.html

@@ -15,9 +15,9 @@
             <p>No results found.</p>
         {% endif %}
 
-        <form class="form" action="{% url 'search' %}" method="get" role="search">
-            <input class="input input--bottom-space" type="text" placeholder="Search…" name="query"{% if search_query %} value="{{ search_query }}"{% endif %}>
-            <input class="link link--button" type="submit" value="Search">
+        <form class="form" action="{% url 'search' %}" method="get" role="search" aria-label="Search form">
+            <input class="input input--bottom-space" type="text" placeholder="Search…" name="query"{% if search_query %} value="{{ search_query }}"{% endif %} aria-label="Search input">
+            <input class="link link--button" type="submit" value="Search" aria-label="search">
         </form>
 
         {% get_search_promotions search_query as search_picks %}