Merge branch 'main_evaluate_wiki' into 'main'

fixed wiki evaluation

See merge request ADLR/megatron-lm!157

tasks/zeroshot_gpt2/detokenizer.py

@@ -69,7 +69,7 @@ def lambada_detokenizer(string):
 
 _DETOKENIZERS = {
     'ptb': ptb_detokenizer,
-    'wikitext': wikitext_detokenizer,
+    'wiki': wikitext_detokenizer,
     'lambada': lambada_detokenizer,
 }