Clarify NEWS

Author: AshesITR

NEWS.md

@@ -15,7 +15,7 @@
 * New `sprintf_linter()` (#544, #578, @renkun-ken)
 * Exclusions specified in the `.lintr` file are now relative to the location of that file 
   and support excluding entire directories (#158, #438, @AshesITR)
-* `object_name_linter()` now excludes special R functions such as `.onLoad` (#500, #614, @AshesITR)
+* `object_name_linter()` now excludes special R hook functions such as `.onLoad` (#500, #614, @AshesITR)
 
 # lintr 2.0.1