[dotnet] Updating examples in documentation (#2346)

* [dotnet] fix example lines in chrome documentation

* [dotnet] moved examples from option documentation into accoding cs file

* fixed text rendering

* updated to consistent formatting in OptionsTest.cs

* [dotnet] updated documentation references for ChromeOptions and DriverOptions

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Co-authored-by: Diego Molina <diemol@users.noreply.github.com>

[deploy site] 21884af

Author: selenium-ci