Duplicate Wifi readme content

[DaveSchmid]

The readme has the content twice. A small change was made. Unfortunately, the WifiNetworkHelper.IsConfigurationStored() method has been deleted.

自述文件有两次内容。 做了一个小改动。 不幸的是，WifiNetworkHelper.IsConfigurationStored() 方法已被删除。

Description

Motivation and Context

How Has This Been Tested?

Screenshots

Types of changes

• Improvement (non-breaking change that improves a feature, code or algorithm)
• Bug fix (non-breaking change which fixes an issue with code or algorithm)
• New feature (non-breaking change which adds functionality to code)
• Breaking change (fix or feature that would cause existing functionality to change)
• Config and build (change in the configuration and build system, has no impact on code or features)
• Dependencies (update dependencies and changes associated, has no impact on code or features)
• Unit Tests (add new Unit Test(s) or improved existing one(s), has no impact on code or features)
• Documentation (changes or updates in the documentation, has no impact on code or features)

Checklist:

• My code follows the code style of this project (only if there are changes in source code).
• My changes require an update to the documentation (there are changes that require the docs website to be updated).
• I have updated the documentation accordingly (the changes require an update on the docs in this repo).
• I have read the CONTRIBUTING document.
• I have tested everything locally and all new and existing tests passed (only if there are changes in source code).
• I have added new tests to cover my changes.

[nfbot]

Hi @DaveSchmid,

😞 If this PR does address any issue, you have to remove the content Fixes/Closes/Resolves(...) under 'Motivation and Context'.

[josesimoes]

Nice catch! Thanks for fixing it.