Fix inaccurate Buscarron project description comment

roles/custom/matrix-bot-buscarron/defaults/main.yml

@@ -1,5 +1,6 @@
 ---
-# buscarron is a helpdesk bot
+
+# buscarron is a Web forms (HTTP POST) to Matrix service.
 # Project source code URL: https://gitlab.com/etke.cc/buscarron
 
 matrix_bot_buscarron_enabled: true