add yaml and yml extensions to fileviewertext

Author: thinknoack

packages/openneuro-app/src/scripts/dataset/files/file-viewer-type.jsx

@@ -20,7 +20,8 @@ const FileViewerType = ({ path, url, data }) => {
     path.endsWith(".bidsignore") ||
     path.endsWith(".gitignore") ||
     path.endsWith(".txt") ||
-    path.endsWith(".rst")
+    path.endsWith(".rst") ||
+    path.endsWith(".yml") || path.endsWith(".yaml")
   ) {
     return <FileViewerText data={data} />
   } else if (