Change comments in _defaults. Use Label instead of heading

templates/_includes/_defaults.html

@@ -1,18 +1,18 @@
-{# Heading for the list of related posts #}
+{# Label for the list of related posts #}
 {% if not RELATED_POSTS_LABEL %}
 {% set RELATED_POSTS_LABEL = 'Related Posts' %}
 {% else %}
 {% set RELATED_POSTS_LABEL = RELATED_POSTS_LABEL %}
 {% endif %}
 
-{# Heading for the list of social profiles #}
+{# Label for the list of social profiles #}
 {% if not SOCIAL_PROFILE_LABEL %}
 {% set SOCIAL_PROFILE_LABEL = 'Contact' %}
 {% else %}
 {% set SOCIAL_PROFILE_LABEL = SOCIAL_PROFILE_LABEL %}
 {% endif %}
 
-{# Heading for the Email subscription form #}
+{# Label for the Email subscription form #}
 {% if not EMAIL_SUBSCRIPTION_LABEL %}
 {% set EMAIL_SUBSCRIPTION_LABEL = 'Email Newsletter' %}
 {% else %}