Updated README.md

Author: gjanders

README.md

@@ -323,7 +323,7 @@ Feel free to open an issue on github or use the contact author on the SplunkBase
 
 ## Release Notes
 ### 3.0.10
-
+- `SearchHeadLevel - audit.log - lookup usage` - correcting issue #21 (thanks @barrettnet)
 
 ### 3.0.9
 In version 3.0.8 the lookup file `splunkadmins_hec_reply_code_lookup.csv` was updated based on [gettingsmarter (github repo)](https://github.com/redvelociraptor/gettingsmarter/), the updated lookup was created by @jgedeon and additionally includes some health endpoint return codes (as well as those returned by the standard HEC endpoint)