Better formulation.

README.md

@@ -14,7 +14,9 @@ tags:
 ## Version History
 
 - **version 1.1**: Version 1.1 was released in Jan 2024, with a change to the
-  tokenizer; the weights are unmodified.
+  tokenizer; the model parameters were mostly kept the same, but the embeddings
+  were enlarged (by copying suitable rows) to correspond to the updated
+  tokenizer.
 
   The tokenizer in the initial release (a) contained a hole (51959 did not
   correspond to any token), and (b) mapped several tokens (unseen during training
@@ -25,7 +27,7 @@ tags:
 
   In version 1.1, the tokenizer was modified by (a) removing the hole, (b)
   mapping all tokens to a unique ID. That also required increasing the
-  vocabulary sizes and embeddings weights (by replicating the embedding of the
+  vocabulary size and embeddings weights (by replicating the embedding of the
   `[UNK]` token). Without finetuning, version 1.1 and version 1.0 gives exactly
   the same results on any input, and the tokens in version 1.0 that mapped to
   a different ID than the `[UNK]` token map to the same ID in version 1.1.