feat(doc): add links to new features on README (#2980) [skip ci]

* feat(doc): add links to new features on README

* fix merge error

* remove blurb about older FSDP2 integration

* update blog link

* chore: update cce commit

* feat: update model support into readme

* Update README.md

Co-authored-by: salman <salman.mohammadi@outlook.com>

* chore: lint num spaces

---------

Co-authored-by: Wing Lian <wing@axolotl.ai>
Co-authored-by: salman <salman.mohammadi@outlook.com>

scripts/cutcrossentropy_install.py

@@ -29,5 +29,5 @@ UV_PREFIX = "uv " if USE_UV else ""
 
 print(
     UNINSTALL_PREFIX
-    + f'{UV_PREFIX}pip install "cut-cross-entropy[transformers] @ git+https://github.com/axolotl-ai-cloud/ml-cross-entropy.git@bb8d9f8"'
+    + f'{UV_PREFIX}pip install "cut-cross-entropy[transformers] @ git+https://github.com/axolotl-ai-cloud/ml-cross-entropy.git@0ee9ee8"'
 )