Awful docs on imaging.proprertyitems

The documentation is absolutely basic beginner style superficial, see example.
The real point here is how to get other typed values from a byte array, which is not evident.
Next, in the rather important case of georeferencing geotiff through property ID 335500, the type given is wrong: array of integer (7) instead of array of doubles. To finish it off, according to the doc on the propertyitem type, array of doubles is not even a possible type.
Please go and fix this really quickly!
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#### Document Details

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* ID: 45b7a862-780e-16fa-2e04-f7d93a678e10
* Version Independent ID: bd842812-fc59-87b7-8eda-70ea3761706f
* Content: [PropertyItem.Value Property (System.Drawing.Imaging)](https://docs.microsoft.com/en-us/dotnet/api/system.drawing.imaging.propertyitem.value?view=netframework-4.7.2)
* Content Source: [xml/System.Drawing.Imaging/PropertyItem.xml](https://github.com/dotnet/dotnet-api-docs/blob/master/xml/System.Drawing.Imaging/PropertyItem.xml)
* Product: **dotnet-api**
* GitHub Login: @dotnet-bot
* Microsoft Alias: **dotnetcontent**