fix caffiene-induced typo.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@19616 65c4cc65-6c06-0410-ace0-fbb531ad65f3

doc/speechrec.txt

 Generic Speech Recognition API
 
-*** NOTE:  To use the API, you must laod the res_speech.so module before any connectors.  For your convenience, there is a preload line commented out in the modules.conf sample file. ***
+*** NOTE:  To use the API, you must load the res_speech.so module before any connectors.  For your convenience, there is a preload line commented out in the modules.conf sample file. ***
 
 Dialplan Applications: