Fix minor typo

README.md

@@ -163,7 +163,7 @@ Falcon-7B is a causal decoder-only model trained on a causal language modeling t
 
 The architecture is broadly adapted from the GPT-3 paper ([Brown et al., 2020](https://arxiv.org/abs/2005.14165)), with the following differences:
 
-* **Positionnal embeddings:** rotary ([Su et al., 2021](https://arxiv.org/abs/2104.09864));
+* **Positional embeddings:** rotary ([Su et al., 2021](https://arxiv.org/abs/2104.09864));
 * **Attention:** multiquery ([Shazeer et al., 2019](https://arxiv.org/abs/1911.02150)) and FlashAttention ([Dao et al., 2022](https://arxiv.org/abs/2205.14135));
 * **Decoder-block:** parallel attention/MLP with a single layer norm.