Suggested wiki documentation change for multiple actions

[Bruce Barnett]

I appreciated the recent change in the wiki for multiple actions (in
the Signing section)

http://cwiki.apache.org/CXF20DOC/ws-security.html

I have a minor suggestion. Instead of 

 outProps.put(WSHandlerConstants.ACTION, "UsernameToken Signature");

wouldn't it be preferrable to use the following form?
  outProps.put(WSHandlerConstants.ACTION, WSHandlerConstants.USERNAME_TOKEN + " 
" + 
                                                                                
  WSHandlerConstants.SIGNATURE);

I don't  know if ACTION  is case sensitive, but  the second avoids
sily spelling errors discovered at runtime. :-)

(I tried to update the wiki, but was unable to).

Cheers,
- Bruce