Fix equality check between sb1 and sb2

[mahfeshar]

This PR/Issue corrects outdated information in the StringBuilder.Equals(StringBuilder) documentation to align it with modern .NET behavior (starting from .NET Core 3.0 through .NET 10).

Key Changes:

Updated section: Removed references to Capacity and MaxCapacity equality, as these properties are no longer part of the comparison logic in modern .NET versions.

Corrected Example Output: Updated the sample code's expected output for case b4. Previously, the example incorrectly stated that sb1.Equals(sb2) would return False when capacities differed. In modern .NET, this returns True as it performs an ordinal string comparison.

Consistency: Resolved the contradiction between the "Remarks" section (which correctly described the .NET Core 3.0+ behavior) and the "Returns/Example" sections which were still reflecting the legacy .NET Framework behavior.

[gewarren]

Thank you @mahfeshar, sorry for the delay in reviewing. Can you also please update cap.vb and cap.fs?

[mahfeshar]

Thanks for the review! No problem at all regarding the delay.
I’ve made the requested updates to cap.vb and cap.fs.

[mahfeshar]

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[gewarren]

@copilot please update the output intros, for example line 49 in cap.cs, to "The example displays the following output on .NET (Core):"