used multiprocess instead of multiprocessing to fix weird mac os issue

wikipedia.py

@@ -24,7 +24,7 @@ import re
 import xml.etree.cElementTree as etree
 from urllib.parse import quote
 import mwparserfromhell
-from multiprocessing import Process, Manager
+from multiprocess import Process, Manager
 from tqdm import tqdm
 
 import datasets
@@ -1049,9 +1049,9 @@ class Wikipedia(datasets.GeneratorBasedBuilder):
             for example in examples:
                 if example is not None:
                     yield example
-        
 
-            
+
+
 
 def _parse_and_clean_wikicode(raw_content, parser, language):
     """Strips formatting and unwanted sections from raw page content."""