fixes broken links to mongod options

Author: schmalliso

source/platforms/amazon-ec2.txt

@@ -294,7 +294,7 @@ Port Management
 
 By default, the :program:`mongod` listens on port ``27017``. To change
 the default port, use the :setting:`net.port` setting or
-:option:`--port` option.
+:option:`--port <mongod.--port>` option.
 
 Keepalive
 `````````

source/tutorial/getting-started-with-hadoop.txt

@@ -73,8 +73,8 @@ primary shard as well.
 .. [#authrequired] :program:`mongod` requires clients to
    authenticate as user when you specify the
    :setting:`security.authorization` or :setting:`security.keyFile`
-   settings or the corresponding :option:`--auth <mongod --auth>` or
-   :option:`--keyFile <mongod --keyFile>` command line options.
+   settings or the corresponding :option:`--auth <mongod.--auth>` or
+   :option:`--keyFile <mongod.--keyFile>` command line options.
 
 Miscellaneous
 ~~~~~~~~~~~~~