[CodeStyle][Xdoctest][206] Fix example code(paddle.sparse.deg2rad)

[A1nair]

PR Category

User Experience

PR Types

Improvements

Description

为如下 API 修复示例代码

• paddle.sparse.deg2rad

Related links

• 📝 文档示例代码修复任务 #76545

@ooooo-create

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[luotao1]

@ooooo-create