fix indentation of raw cells

a matter of missing '{%-'

IPython/nbconvert/templates/latex/skeleton/null.tplx

@@ -77,9 +77,9 b' consider calling super even if it is a leave block, we might insert more blocks '
             ((*- endblock markdowncell -*))
         ((*- elif cell.cell_type in ['raw'] -*))
             ((*- block rawcell scoped -*))
-            ((* if cell.metadata.get('raw_mimetype', '').lower() in resources.get('raw_mimetypes', ['']) *))
+            ((*- if cell.metadata.get('raw_mimetype', '').lower() in resources.get('raw_mimetypes', ['']) -*))
             ((( cell.source )))
-            ((* endif *))
+            ((*- endif -*))
             ((*- endblock rawcell -*))
         ((*- else -*))
             ((*- block unknowncell scoped-*))

IPython/nbconvert/templates/skeleton/null.tpl

@@ -73,9 +73,9 b' consider calling super even if it is a leave block, we might insert more blocks '
             {%- endblock markdowncell -%}
         {%- elif cell.cell_type in ['raw'] -%}
             {%- block rawcell scoped -%}
-            {% if cell.metadata.get('raw_mimetype', '').lower() in resources.get('raw_mimetypes', ['']) %}
+            {%- if cell.metadata.get('raw_mimetype', '').lower() in resources.get('raw_mimetypes', ['']) -%}
             {{ cell.source }}
-            {% endif %}
+            {%- endif -%}
             {%- endblock rawcell -%}
         {%- else -%}
             {%- block unknowncell scoped-%}