add warning for deprecated transforms

Co-authored-by: Alex Johnson <[email protected]>

Author: archmoj

src/plots/attributes.js

@@ -167,7 +167,7 @@ module.exports = {
         _isLinkedToArray: 'transform',
         editType: 'calc',
         description: [
-            'This attribute is deprecated and it may be removed from the API in next major version.',
+            'WARNING: All transforms are deprecated and may be removed from the API in next major version.',
             'An array of operations that manipulate the trace data,',
             'for example filtering or sorting the data arrays.'
         ].join(' ')