Correct the dataset names above the performance tables

README.md

@@ -67,7 +67,7 @@ The pipeline includes:
 
 ## Benchmark Results
 
-**Japanese NF-Corpus (Japanese translation of NF-Corpus)**
+**Japanese TREC-COVID (Japanese translation of TREC-COVID)**
 
 |  | nDCG@10 | Recall@100 |
 | -------- | -------- | -------- |
@@ -80,7 +80,7 @@ The pipeline includes:
 | aken12/splade-japanese-v3 | 0.6193 | 0.1141 | 
 | hotchpotch/japanese-splade-v2 | 0.7021 | 0.1274 | 
 
-**Japanese TREC-COVID (Japanese translation of TREC-COVID)**
+**Japanese NF-Corpus (Japanese translation of NF-Corpus)**
 
 |  | nDCG@10 | Recall@100 |
 | -------- | -------- | -------- |