Issue #3506177 by juandhr: Modify support mentions for Drupal core's search in README
Replace lines 26 and 27 in README.md:
No other modules are required; we're supporting Drupal Core's search as a
source for creating facets.
With:
Search API is required: Facets only supports Search API as a source for creating
facets. Drupal Core's search is no longer supported as a source for facets.
