Fix broken assertions link in help

[fflaten]

PR Summary

Fixes a broken link in Should help for the custom assertions page at https://pester.dev/docs/assertions.

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[fflaten]

@bravo-kernel Why doesn't this use assertions/assertions anymore? Special because it's named the same as the folder?

[bravo-kernel]

My best guess would be that this is some sort new Docusaurus behavior for same/same pages. IIRC people had been asking for that logic for some time and I must say, it feels logical to me. Anyway, should be easy to verify by creating introduction/introduction or sth. Can try this weekend unless you beat me to it.

[fflaten]

Determining projects to restore...
  Restored D:\a\1\s\src\csharp\Pester\Pester.csproj (in 42.26 sec).
  Restored D:\a\1\s\src\csharp\PesterTests\PesterTests.csproj (in 2 min).

😠

[azure-pipelines]

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[fflaten]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[bravo-kernel]

One more thing before I sign out for today. If assertions/assertions is indeed the intended default page, don't you think we should change the current sidebar order below? I would expect Assertions Reference to be on top.

[fflaten]

I see your point, but personal opinion is no. It breaks the natural reading flow (think about the next/previous page). A user needs to know the basics of Should before getting overwhelmed by all the assertions 🙂

[bravo-kernel]

I hear you, just checking ;)