On the comparison example on English vs Turkish for Bill

On the comparison example on English vs Turkish for Bill. It took me a while to understand the example why BILL and Bill are different under the Turkish (current culture). Essentially **_the `i` does not exist in the locale_** because the `i` in capital is `I` with a dot above and lowercase is `I` without the dot.

Maybe it is best to lead the reader on what is going on? Thanks.

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* ID: dead2df6-1ec5-b55c-89aa-d05a7a75a0eb
* Version Independent ID: fe538551-dcfc-c244-3f16-864d3f6c2a6e
* Content: [Best Practices for Comparing Strings in .NET](https://learn.microsoft.com/en-us/dotnet/standard/base-types/best-practices-strings)
* Content Source: [docs/standard/base-types/best-practices-strings.md](https://github.com/dotnet/docs/blob/main/docs/standard/base-types/best-practices-strings.md)
* Product: **dotnet-fundamentals**
* GitHub Login: @adegeo
* Microsoft Alias: **adegeo**