Update README.md

README.md

@@ -56,7 +56,7 @@ Experiments on general-domain data suggest that, given it's specialised training
 #### Training Hyperparameters
 
 - sequence length: 256
-- learning rate $7.5\times10^{-5}$
+- learning rate 7.5e-5
 - linear learning rate schedule with 10,770 warmup steps
 - effective batch size 1500 (15 sequences per batch x 100 gradient accumulation steps)
 - MLM masking probability 0.15