Add ByteLevel normalizer to documentation

Author: ArthurZucker

docs/source-doc-builder/api/normalizers.mdx

@@ -2,9 +2,9 @@
 
 <tokenizerslangcontent>
 <python>
-## BertNormalizer
+## ByteLevel
 
-[[autodoc]] tokenizers.normalizers.BertNormalizer
+[[autodoc]] tokenizers.normalizers.ByteLevel
 
 ## Lowercase
 
@@ -53,11 +53,16 @@
 ## StripAccents
 
 [[autodoc]] tokenizers.normalizers.StripAccents
+
+## BertNormalizer
+
+[[autodoc]] tokenizers.normalizers.BertNormalizer
+
 </python>
 <rust>
 The Rust API Reference is available directly on the [Docs.rs](https://docs.rs/tokenizers/latest/tokenizers/) website.
 </rust>
 <node>
 The node API has not been documented yet.
 </node>
-</tokenizerslangcontent>
+</tokenizerslangcontent>