Update Welcome Bot message [skip ci]

Author: oesteban

.github/config.yml

@@ -13,16 +13,18 @@ newPRWelcomeComment: >
   file and insert yor data last in the ``contributors`` list. Example:
 
   ```JSON
+  
   {
      "name": "Contributor, New dMRIPrep",
      "affiliation": "Department of dMRI prep'ing, Open Science Made-Up University",
      "orcid": "<your id>",
      "type": "Researcher"
   }
+  
   ```
 
 
   Of course, if you want to opt-out this time there is no
   problem at all with adding your name later.
   You will be always welcome to add it in the future whenever
-  you feel it should be listed.
+  you feel it should be listed.