fix documentation regarding regex (#1264)

* fix documentation regarding regex

Split() in pre_tokenizers.rs and normalizations take a regex that is required to be built with a tokenizer specific regex module.
Clarify this in the documentation.

* Update __init__.pyi

fixed __init__.pyi

* Update bindings/python/py_src/tokenizers/__init__.pyi

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* Update bindings/python/py_src/tokenizers/__init__.pyi

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* Revert "Update bindings/python/py_src/tokenizers/__init__.pyi"

This reverts commit 6e8bdfcddf67bcdd8e3b1a78685fd5ef8f6a153c.

* Revert "Update bindings/python/py_src/tokenizers/__init__.pyi"

This reverts commit 897b0c0de471ad7cb6269b8456347c4e5cff2aaf.

* Revert "Update __init__.pyi"

This reverts commit fbe82310b7728ee7cdb6f8b38fbc2388f9d95771.

* add codeblocks the right way

* add codeblocks with stub.py

ran setup.py install to build, and then ran stub.py

---------

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

bindings/python/py_src/tokenizers/__init__.pyi

@@ -494,7 +494,7 @@ class NormalizedString:
 
         Args:
             pattern: Pattern:
-                A pattern used to split the string. Usually a string or a Regex
+                A pattern used to split the string. Usually a string or a regex built with `tokenizers.Regex`
 
             behavior: SplitDelimiterBehavior:
                 The behavior to use when splitting.

bindings/python/py_src/tokenizers/pre_tokenizers/__init__.pyi

@@ -411,7 +411,7 @@ class Split(PreTokenizer):
 
     Args:
         pattern (:obj:`str` or :class:`~tokenizers.Regex`):
-            A pattern used to split the string. Usually a string or a Regex
+            A pattern used to split the string. Usually a string or a a regex built with `tokenizers.Regex`
 
         behavior (:class:`~tokenizers.SplitDelimiterBehavior`):
             The behavior to use when splitting.

bindings/python/src/pre_tokenizers.rs

@@ -325,7 +325,7 @@ impl PyWhitespaceSplit {
 ///
 /// Args:
 ///     pattern (:obj:`str` or :class:`~tokenizers.Regex`):
-///         A pattern used to split the string. Usually a string or a Regex
+///         A pattern used to split the string. Usually a string or a a regex built with `tokenizers.Regex`
 ///
 ///     behavior (:class:`~tokenizers.SplitDelimiterBehavior`):
 ///         The behavior to use when splitting.

bindings/python/src/utils/normalization.rs

@@ -318,7 +318,7 @@ impl PyNormalizedString {
     ///
     /// Args:
     ///     pattern: Pattern:
-    ///         A pattern used to split the string. Usually a string or a Regex
+    ///         A pattern used to split the string. Usually a string or a regex built with `tokenizers.Regex`
     ///
     ///     behavior: SplitDelimiterBehavior:
     ///         The behavior to use when splitting.