Merge pull request #531 from yukinarit/remove-@dataclass-from-docs

Remove @DataClass from documentation

Author: yukinarit

docs/en/class-attributes.md

@@ -32,7 +32,6 @@ See [examples/kw_only.py](https://github.com/yukinarit/pyserde/blob/main/example
 
 ```python
 @serde(rename_all = 'camelcase')
-@dataclass
 class Foo:
     int_field: int
     str_field: str

docs/en/decorators.md

@@ -7,7 +7,6 @@
 This code
 ```python
 @serde
-@dataclass
 class Foo:
     ...
 ```
@@ -116,10 +115,8 @@ pyserde supports [PEP563 Postponed evaluation of annotation](https://peps.python
 ```python
 from __future__ import annotations
 from serde import serde
-from dataclasses import dataclass
 
 @serde
-@dataclass
 class Foo:
     i: int
     s: str

docs/en/introduction.md

@@ -4,7 +4,6 @@
 
 ```python
 @serde
-@dataclass
 class Foo:
     i: int
     s: str

docs/en/type-check.md

@@ -59,7 +59,6 @@ Type coercing automatically converts a value into the declared type during (de)s
 
 ```python
 @serde(type_check=Coerce)
-@dataclass
 class Foo
     s: str
 
@@ -75,7 +74,6 @@ This is the default behavior until pyserde v0.8.3 and v0.9.x. No type coercion o
 
 ```python
 @serde
-@dataclass
 class Foo
     s: str
 

docs/en/union.md

@@ -36,7 +36,6 @@ class Foo:
 >
 > ```python
 > @serde(tagging=ExternalTagging)
-> @dataclass
 > class Foo:
 >    a: Union[list[int], set[int]]
 > ```