Command for dotnet new --install is wrong

Hi, I was just following this guide. The install of the templates should be

`dotnet new --install Microsoft.EntityFrameworkCore.Templates::7.0.0-*`

The two -- are missing! :)

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#### Document Details

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* ID: cae415b7-c0ea-4d96-9d17-7e7d3163c09d
* Version Independent ID: cae415b7-c0ea-4d96-9d17-7e7d3163c09d
* Content: [Custom Reverse Engineering Templates - EF Core](https://learn.microsoft.com/en-us/ef/core/managing-schemas/scaffolding/templates?tabs=dotnet-core-cli)
* Content Source: [entity-framework/core/managing-schemas/scaffolding/templates.md](https://github.com/dotnet/EntityFramework.Docs/blob/main/entity-framework/core/managing-schemas/scaffolding/templates.md)
* Product: **entity-framework**
* Technology: **entity-framework-core**
* GitHub Login: @bricelam
* Microsoft Alias: **avickers**

Apri entity-framework/core/managing-schemas/scaffolding/templates.md, la fonte collegata nell’issue, e trova il comando di installazione nella guida Custom Reverse Engineering Templates. Correggi il comando in modo che utilizzi l’opzione documentata con due trattini, quindi verifica che la guida renderizzata mostri esattamente il comando riportato nell’issue.

Scritto dal modello di indicizzazione a partire dal testo della issue.