Fix #49457 – Update VB build instructions to prefer dotnet build over vbc.exe

[veerasai06]

This PR updates the how-to-invoke-the-command-line-compiler.md article to reflect modern .NET build practices.

Changes made:

• Added a tip note recommending the use of dotnet build for modern .NET projects.
• Clarified that vbc.exe is only applicable for older .NET Framework projects.
• Ensured formatting and examples remain consistent with other compiler docs.

Related issue:

Fixes #49457

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Internal previews

📄 File	🔗 Preview link
docs/visual-basic/reference/command-line-compiler/how-to-invoke-the-command-line-compiler.md	How to Invoke the Command-Line Compiler

[veerasai06]

@dotnet-policy-service agree

[veerasai06]

I fixed the broken “Conditional Compilation” link and verified all references.
The doc now correctly includes a link to dotnet build for modern .NET SDK usage.
This PR is ready for review.

[veerasai06]

Hi @BillWagner, I’ve updated the Visual Basic compiler documentation as requested.
All checks have passed, and the PR includes modern .NET build usage notes.
Kindly review and approve when you get a chance. Thank you!

[BillWagner]

I'd like three changes here. First, can you move this toward the top of the file, above line 14. Second, can you add a link to the dotnet build command? It's in core/tools/dotnet-build.md file. Third, there's an extension [!TIP ] that styles this on the learn site. Can you modify this paragraph to use it?

Thanks!

[veerasai06]

Thanks, @BillWagner! I’ll move the Tip section above line 14, add the link to dotnet build, and update it to use the [!TIP] style as suggested. I’ll push the changes shortly.