💡 add depends example

docs/api/dependencies.md

@@ -26,3 +26,18 @@ sidebarDepth: 0
 
 
     * `use_cache: bool = True`: 是否使用缓存。默认为 `True`。
+
+
+```python
+def depend_func() -> Any:
+    return ...
+
+def depend_gen_func():
+    try:
+        yield ...
+    finally:
+        ...
+
+async def handler(param_name: Any = Depends(depend_func), gen: Any = Depends(depend_gen_func)):
+    ...
+```

nonebot/dependencies/__init__.py

@@ -203,5 +203,19 @@ def Depends(dependency: Optional[T_Handler] = None,
 
       * ``dependency: Optional[Callable[..., Any]] = None``: 依赖函数。默认为参数的类型注释。
       * ``use_cache: bool = True``: 是否使用缓存。默认为 ``True``。
+
+    .. code-block:: python
+
+        def depend_func() -> Any:
+            return ...
+
+        def depend_gen_func():
+            try:
+                yield ...
+            finally:
+                ...
+
+        async def handler(param_name: Any = Depends(depend_func), gen: Any = Depends(depend_gen_func)):
+            ...
     """
     return DependsWrapper(dependency=dependency, use_cache=use_cache)