Fix url of SearchMsdn when do search with generic types and .ctor methods

[yyjdelete]

Before: https://docs.microsoft.com/dotnet/api/system.collections.generic.dictionary.keycollection..ctor
After: https://docs.microsoft.com/dotnet/api/system.collections.generic.dictionary-2.keycollection.-ctor

[siegfriedpammer]

Maybe this will need adjustments for static constructors (.cctor) and operators (op_) as well?

[yyjdelete]

operators already works
https://docs.microsoft.com/dotnet/api/system.decimal.op_explicit

.cctor should always be private and already be disabled by checks in bool IsEnabled(TextViewContext context).

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But I'm not sure which is better for enum and delegate, add special logic for them to use DeclaringType instead, or simply disable it in IsEnabled, or just leave it as it is before.
There is only
https://docs.microsoft.com/en-us/dotnet/api/system.dayofweek
https://docs.microsoft.com/en-us/dotnet/api/system.action
but not
https://docs.microsoft.com/en-us/dotnet/api/system.dayofweek.sunday
https://docs.microsoft.com/en-us/dotnet/api/system.dayofweek.value__
https://docs.microsoft.com/en-us/dotnet/api/system.action.invoke

[siegfriedpammer]

Enum values and delegate members should just return false for IsEnabled, I think.

[siegfriedpammer]

Thank you for your contribution!