DOCS-500 minor syntax related correction

Author: Sam Kleinman

source/reference/mongodump.txt

@@ -56,7 +56,7 @@ Options
 
    .. code-block:: javascript
 
-      mongodump --host repl0/mongo0.example.net,mongo0.example.net,27018,mongo1.example.net,mongo2.example.net
+      mongodump --host repl0/mongo0.example.net,mongo0.example.net:27018,mongo1.example.net,mongo2.example.net
 
    You can always connect directly to a single MongoDB instance by
    specifying the host and port number directly.
@@ -195,7 +195,7 @@ Options
    .. warning:: Use :option:`--forceTableScan` with extreme caution
       and consideration.
 
-   operations 
+   operations
 
 
 .. _mongodump-behavior: