Update README.md

README.md

@@ -254,7 +254,7 @@ attachment-specific `before_<attachment>_post_process` and
 `after_<attachment>_post_process`. The callbacks are intended to be as close to
 `after_<attachment>_post_process`. The callbacks are intended to be as close to
 normal ActiveRecord callbacks as possible, so if you return false (specifically
 normal ActiveRecord callbacks as possible, so if you return false (specifically
 \- returning nil is not the same) in a `before_filter`, the post processing step
 \- returning nil is not the same) in a `before_filter`, the post processing step
-will halt. Returning false in an `after_filter will not halt anything, but you
+will halt. Returning false in an `after_filter` will not halt anything, but you
 can access the model and the attachment if necessary.
 can access the model and the attachment if necessary.
 
 
 _NOTE: Post processing will not even *start* if the attachment is not valid
 _NOTE: Post processing will not even *start* if the attachment is not valid