Fix bug with subset configs

RedPajama-Data-1T.py

@@ -67,49 +67,49 @@ class RedPajama1T(datasets.GeneratorBasedBuilder):
 
         RedPajama1TConfig(
             name = 'arxiv',
-            subsets = 'arxiv',
+            subsets = ['arxiv'],
             version=datasets.Version("1.0.0", ""),
             description="RedPajama1T arxiv subset",
         ),
 
         RedPajama1TConfig(
             name = 'book',
-            subsets = 'book',
+            subsets = ['book'],
             version=datasets.Version("1.0.0", ""),
             description="RedPajama1T book subset",
         ),
 
         RedPajama1TConfig(
             name = 'c4',
-            subsets = 'c4',
+            subsets = ['c4'],
             version=datasets.Version("1.0.0", ""),
             description="RedPajama1T c4 subset",
         ),
 
         RedPajama1TConfig(
             name = 'common_crawl',
-            subsets = 'common_crawl',
+            subsets = ['common_crawl'],
             version=datasets.Version("1.0.0", ""),
             description="RedPajama1T common crawl subset",
         ),
 
         RedPajama1TConfig(
             name = 'github',
-            subsets = 'github',
+            subsets = ['github'],
             version=datasets.Version("1.0.0", ""),
             description="RedPajama1T github subset",
         ),
 
         RedPajama1TConfig(
             name = 'stackexchange',
-            subsets = 'stackexchange',
+            subsets = ['stackexchange'],
             version=datasets.Version("1.0.0", ""),
             description="RedPajama1T stackexchange subset",
         ),
 
         RedPajama1TConfig(
             name = 'wikipedia',
-            subsets = 'wikipedia',
+            subsets = ['wikipedia'],
             version=datasets.Version("1.0.0", ""),
             description="RedPajama1T wikipedia subset",
         ),