📝 Fix a typo in the base template

Author: davep

src/ng2web/templates/base.html

@@ -9,7 +9,7 @@
     <meta name="generator" content="{{ generator }}">
     <link rel="stylesheet" type="text/css" href="{{ stylesheet }}">
     <title>{% block title %}{{ None|title }}{% endblock %}</title>
-    <meta name="decription" content="{{ None|title }}">
+    <meta name="description" content="{{ None|title }}">
     {% if previous_url %}<link rel="prev" href="{{ previous_url }}">{% endif %}
     {% if next_url %}<link rel="next" href="{{ next_url }}">{% endif %}
     {% block extraheaders %}{% endblock %}