Fixed typo in S3 rake task

Fixed typo in S3 rake task

diff --git a/lib/tasks/s3.rake b/lib/tasks/s3.rake
index 0389f9c..28b0fd6 100644
--- a/lib/tasks/s3.rake
+++ b/lib/tasks/s3.rake
@@ -101,7 +101,7 @@ end
 
 def ensure_s3_configured!
   unless GlobalSetting.use_s3? || use_db_s3_config
-    STDERR.puts "ERROR: Ensure S3 is configured in config/discourse.conf of environment vars"
+    STDERR.puts "ERROR: Ensure S3 is configured in config/discourse.conf or environment vars"
     exit 1
   end
 end

GitHub sha: 04abf181