fix: spelling

Signed-off-by: Will Johnson <mwjohnson728@gmail.com>

README.md

@@ -768,7 +768,7 @@ Notes:
     - `--fast_moe` is an integer value that configures the amount of expert parallel sharding (ep_degree).
     - `world_size` must be divisible by the `ep_degree`
     - Running fast moe modifies the state dict of the model, and must be post-processed using [checkpoint utils](https://github.com/foundation-model-stack/fms-acceleration/blob/main/plugins/accelerated-moe/src/fms_acceleration_moe/utils/checkpoint_utils.py) to run inference (HF, vLLM, etc.).
-      - The typical uscase for this script is to run:
+      - The typical usecase for this script is to run:
         ```
         python -m fms_acceleration_moe.utils.checkpoint_utils \
         <checkpoint file> \