[mod] core.ac.uk: add cetgory 'scientific publications'

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/engines/core.py

@@ -18,7 +18,7 @@ about = {
     "results": 'JSON',
 }
 
-categories = ['science']
+categories = ['science', 'scientific publications']
 paging = True
 nb_per_page = 10