Remove "compiler-option" suffix from file names

[Youssef1313]

https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/compiler-options/langversion-compiler-option

The -compiler-option in the url is an unnecessary duplication. It's better to be just:

https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/compiler-options/langversion

[BillWagner]

@Youssef1313

You're right, but I'm going to advocate for a different change.

I think there is a case for creating one page that lists all the compiler options with a brief description. Each option would be an H2, so the right nav would be useful for finding each option. I think the page length would still be manageable. Finally, it would create one obvious location for explaining how to set compiler options using dotnet build or msbuild.

What do you think?

[Youssef1313]

@BillWagner That looks perfect!