fix link to config file

README.md

@@ -50,7 +50,7 @@ The following filtering is done
 - input length: 512
 - output length: 114
 
-- Otherwise, the default value of T5X (https://github.com/google-research/t5x/blob/main/t5x/examples/t5/t5_1_1/base.gin) is followed, including the following.
+- Otherwise, the default value of T5X (https://github.com/google-research/t5x/blob/main/t5x/examples/t5/t5_1_1/large.gin) is followed, including the following.
   - optimizer: Adafactor
   - base_learning_rate: 1.0
   - warmup steps: 10000