added /poller/eumetsat-multicast to docs

docs/source/protocol/poller.rst

@@ -18,3 +18,9 @@ These endpoints are intended for use by BRIAN.
 ---------------------------------
 
 .. autofunction:: inventory_provider.routes.poller.interface_speeds
+
+
+/poller/eumetsat-multicast
+---------------------------------
+
+.. autofunction:: inventory_provider.routes.poller.eumetsat_multicast

inventory_provider/routes/poller.py

@@ -435,7 +435,7 @@ def eumetsat_multicast(hostname=None):
     .. asjson::
        inventory_provider.routes.poller.MULTICAST_SUBSCRIPTION_LIST_SCHEMA
 
-    This method is basically hard-coded data,
+    This method returns essentially hard-coded data,
     based on the information in POL1-395.
 
     :return: