fix for typo found in #2119

Author: Sam Kleinman

source/release-notes/2.8-compatibility.txt

@@ -107,7 +107,7 @@ Version Compatibility
 ~~~~~~~~~~~~~~~~~~~~~
 
 :program:`mongod` instances before 2.6.6 cannot perform an initial sync
-against 2.8 replica set members. Do not add :program:`mongod 2.6.6
+against 2.8 replica set members. Do not add :program:`mongod` 2.6.6
 members to a replica set that has 2.8 members.
 
 .. _2.8-oplog-format-change: