[docs] Buffer clients link to buffer management tutorial (#157)

* if client starts with buf link to buffer management tutorial

* use full name of guide

* use name of .maxvig rather than name attribute of <vignette>

* also dataset objects

Author: James Bradbury

flucoma/doc/templates/maxref.xml

@@ -167,5 +167,8 @@ under the European Union’s Horizon 2020 research and innovation programme
     {% for s in max_seealso %}
     <seealso name='{{ s }}' /> 
     {% endfor %}
+    {%- if client_name.startswith('Buf') or species == 'data' -%}
+    <seealso module='flucoma' type='vignette' name="automatic_buffer_and_dataset_management" />
+    {%- endif -%}
 	</seealsolist>
 </c74object>