added homepage and cite

TID2008.py

@@ -39,9 +39,9 @@ class TID2008(datasets.GeneratorBasedBuilder):
             description=_DESCRIPTION,
             features=features,
             # supervised_keys=("reference", "distorted", "mos"),
-            # homepage=_HOMEPAGE,
+            homepage=_HOMEPAGE,
             # license=_LICENSE,
-            # citation=_CITATION,
+            citation=_CITATION,
         )
 
     def _split_generators(self, dl_manager):