Fix typos in docs and comments (#11064)

stubs/WTForms/wtforms/fields/core.pyi

@@ -85,7 +85,7 @@ class Field:
     def process_formdata(self, valuelist: list[Any]) -> None: ...
     def populate_obj(self, obj: object, name: str) -> None: ...
 
-    # this is a workaround for what is essentialy illegal in static type checking
+    # this is a workaround for what is essentially illegal in static type checking
     # Field.__new__ would return an UnboundField, unless the _form parameter is
     # specified. We can't really work around it by making UnboundField a subclass
     # of Field, since all subclasses of Field still need to return an UnboundField

stubs/WTForms/wtforms/meta.pyi

@@ -14,7 +14,7 @@ class _SupportsGettextAndNgettext(Protocol):
     def ngettext(self, __singular: str, __plural: str, __n: int) -> str: ...
 
 # these are the methods WTForms depends on, the dict can either provide
-# a getlist or getall, if it only provies getall, it will wrapped, to
+# a getlist or getall, if it only provides getall, it will wrapped, to
 # provide getlist instead
 class _MultiDictLikeBase(Protocol):
     def __iter__(self) -> Iterator[str]: ...
@@ -50,6 +50,6 @@ class DefaultMeta:
     translations_cache: dict[str, _SupportsGettextAndNgettext]
     def get_translations(self, form: BaseForm) -> _SupportsGettextAndNgettext: ...
     def update_values(self, values: SupportsItems[str, Any]) -> None: ...
-    # since meta can be extended with arbitary data we add a __getattr__
+    # since meta can be extended with arbitrary data we add a __getattr__
     # method that returns Any
     def __getattr__(self, name: str) -> Any: ...