Specify solution file in dotnet build command

[Copilot]

The tutorial creates XUnit.Coverage.sln but the build command didn't specify it, causing MSBuild to fail with error MSB1011 when multiple solution files exist in the directory.

Changes

• Updated dotnet build to dotnet build XUnit.Coverage.sln on line 152

This aligns with the solution file created earlier in the tutorial and matches the pattern used by other commands that already specify the solution file explicitly (dotnet sln XUnit.Coverage.sln add ...).

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Missing details of command</issue_title>
<issue_description>### Type of issue

Missing information

Description

While following the documentation, at this step, the following error is thrown:
MSBUILD : error MSB1011: Specify which project or solution file to use because this folder contains more than one project or solution file.

There are 2 solution files available at the moment in working directory, namely

1. Xunit.Coverage.sln
2. UnitTestingCodeCoverage.sln

Presumably, the complete command should be dotnet build .\Xunit.Coverage.sln

Page URL

https://learn.microsoft.com/en-us/dotnet/core/testing/unit-testing-code-coverage?tabs=windows

Content source URL

https://github.com/dotnet/docs/blob/main/docs/core/testing/unit-testing-code-coverage.md

Document Version Independent Id

ab6ce421-f5e5-94f1-e707-32763b3a6a24

Article author

@IEvangelist</issue_description>

Comments on the Issue (you are @copilot in this section)

@gewarren cc @meaghanlewis

• Fixes Missing details of command #38003

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Internal previews

📄 File	🔗 Preview link
docs/core/testing/unit-testing-code-coverage.md	docs/core/testing/unit-testing-code-coverage

[Copilot]

Pull request overview

This PR fixes a tutorial error where the dotnet build command failed with MSB1011 when multiple solution files existed in the directory. The fix specifies the solution file explicitly in the build command.

• Updated dotnet build to dotnet build XUnit.Coverage.sln to match the solution file created earlier in the tutorial
• Ensures consistency with other commands that already specify the solution file explicitly (dotnet sln XUnit.Coverage.sln add)