addressing @josenavas comments

Author: antgonza

qiita_pet/templates/study_ajax/artifact_file_selector.html

@@ -197,6 +197,7 @@
   <div class="col-md-12">
     <b>or click and drag your uploaded files to the correct file type</b><br/>
       <div class="blinking-message">
+        Please make sure that the correct files are in the correct column.<br/>
         Note: the system will try to auto select the files based on run_prefix, if that doesn't work, either the type you selected doesn't support
         it or the run_prefix is wrong
       </div>