Change dimensions of embed image

templates/plant.html

@@ -6,7 +6,7 @@
   <title>{{ page.title }} - Plant Wiki</title>
   <meta name="description" content="Information about {{ page.title }} ({{ data.bin_name }})" />  
 
-  {% set image = resize_image(path=data.image.url, width=512, height=255) %}
+  {% set image = resize_image(path=data.image.url, width=255, height=255) %}
   <meta name="og:image" content="{{ image.url }}" />
   <meta name="og:image:alt" content="{{ data.image.alt }}" />
 {% endblock meta %}