Added blank lines between milestones, so they don't get run together if they are long enough to cause line wrapping. Fixes issue ietf-tools#2311.

 - Legacy-Id: 13572

Author: levkowetz

ietf/templates/doc/charter/group_info.txt

@@ -37,5 +37,6 @@ Charter: {{ charter_url }}
 {{ charter_text }}
 
 Milestones:
-{% for milestone in milestones %}  {% if milestone.resolved %}{{ milestone.resolved }}    {% else %}{{ milestone.due|date:"M Y" }}{% endif %} - {{ milestone.desc|safe }}
+{% for milestone in milestones %}
+  {% if milestone.resolved %}{{ milestone.resolved }}    {% else %}{{ milestone.due|date:"M Y" }}{% endif %} - {{ milestone.desc|safe }}
 {% endfor %}