DOCS-536 minor: typo

Author: Bob Grabar

source/administration/replica-sets.txt

@@ -512,7 +512,7 @@ resource requirements and do not require dedicated hardware.
       mongod --port 30000 --dbpath /data/arb --replSet rs
 
 #. In a :program:`mongo` shell connected to the :term:`primary`, add the
-ß   arbiter to the replica set by issuing the :method:`rs.addArb()`
+   arbiter to the replica set by issuing the :method:`rs.addArb()`
    method, which uses the following syntax:
 
    .. code-block:: javascript