replace degrowth.net instance URL

plugin.rb

@@ -7,9 +7,9 @@
 class Onebox::Engine::CodimdOnebox
   include Onebox::Engine
   # we only want to match for a specific codimd domain
-  matches_regexp %r{\Ahttps://pad\.libreho\.st/}
+  matches_regexp %r{\Ahttps://pad\.degrowth\.net/}
 
   def to_html
-    "<iframe name='embed_readwrite' src='#{@url}' style='border-width:0' frameborder='0' scrolling='no' width='100%' height=600></iframe><br><a href='#{@url}' target='_blank'>Goto this Pad</a>"
+    "<iframe name='embed_readwrite' src='#{@url}' style='border-width:0' frameborder='0' scrolling='no' width='100%' height=600></iframe><br /><a href='#{@url}' target='_blank'>Visit this pad.</a>"
   end
 end