Docs update

Author: akutayural

docs/usage/custom_codes.md

@@ -21,7 +21,7 @@ The `BaseExceptionCode` in **APIException** gives you a simple pattern to organi
 Create your own class by extending `BaseExceptionCode` and declare your error codes once:
 
 ```python
-from APIException import BaseExceptionCode
+from api_exception import BaseExceptionCode
 
 class CustomExceptionCode(BaseExceptionCode):
     # Format: KEY = (code, message, description)
@@ -34,7 +34,7 @@ class CustomExceptionCode(BaseExceptionCode):
 Raise your custom error with full `typing`, `logging`, and `standardized` response:
 
 ```python
-from APIException import APIException
+from api_exception import APIException
 
 raise APIException(
     error_code=CustomExceptionCode.USER_NOT_FOUND,

docs/usage/fallback.md

@@ -20,7 +20,7 @@ When you call `register_exception_handlers()`, just pass `use_fallback_middlewar
 
 ```python
 from fastapi import FastAPI
-from APIException import register_exception_handlers
+from api_exception import register_exception_handlers
 
 app = FastAPI()
 

docs/usage/quick_start.md

@@ -13,7 +13,7 @@ pip install apiexception
 Add the register_exception_handlers to your FastAPI app to automatically handle and standardize your responses:
 
 ```python
-from APIException import register_exception_handlers
+from api_exception import register_exception_handlers
 from fastapi import FastAPI
 
 app = FastAPI()
@@ -28,8 +28,9 @@ Your API now returns consistent success & error responses, and unexpected server
 Here’s a minimal example:
 ```python
 from fastapi import FastAPI, Path
-from APIException import APIException, ExceptionStatus, register_exception_handlers, ResponseModel, APIResponse, BaseExceptionCode
 from pydantic import BaseModel, Field
+from api_exception import APIException, register_exception_handlers, ResponseModel, APIResponse, BaseExceptionCode
+
 
 app = FastAPI()
 

docs/usage/register_exception_handlers.md

@@ -96,7 +96,7 @@ Header: `Content-Type: application/problem+json`
 
 ```python
 from fastapi import FastAPI
-from APIException import register_exception_handlers
+from api_exception import register_exception_handlers
 
 app = FastAPI()
 register_exception_handlers(app)
@@ -113,7 +113,7 @@ register_exception_handlers(app)
 
 ### Production with file logging and quieter handled errors
 ```python
-from APIException import register_exception_handlers, add_file_handler, logger
+from api_exception import register_exception_handlers, add_file_handler, logger
 
 add_file_handler("prod_errors.log")
 register_exception_handlers(
@@ -126,7 +126,7 @@ logger.setLevel("WARNING")
 
 ### RFC 7807 outputs
 ```python
-from APIException import register_exception_handlers
+from api_exception import register_exception_handlers
 from custom_enum.enums import ResponseFormat
 
 register_exception_handlers(
@@ -161,7 +161,7 @@ register_exception_handlers(
 ```python
 from fastapi import FastAPI, Path
 from pydantic import BaseModel
-from APIException import (
+from api_exception import (
     APIException, register_exception_handlers, ResponseModel,
     BaseExceptionCode, APIResponse
 )