make C# binding clearer

README.md

@@ -16,12 +16,12 @@ operations](http://libvips.github.io/libvips/API/current/func-list.html)
covering arithmetic, histograms, convolution, morphological
operations, frequency filtering, colour, resampling,
statistics and others. It supports a large range of [numeric
formats](http://libvips.github.io/libvips/API/current/VipsImage.html#VipsBandFormat),
types](http://libvips.github.io/libvips/API/current/VipsImage.html#VipsBandFormat),
from 8-bit int to 128-bit complex. Images can have any number of bands.
It supports a good range of image formats, including JPEG, TIFF, PNG, WebP,
FITS, Matlab, OpenEXR, PDF, SVG, HDR, PPM, CSV, GIF, Analyze, NIfTI, DeepZoom,
and OpenSlide.  It can also load images via ImageMagick or GraphicsMagick,
letting it load formats like DICOM.
and OpenSlide. It can also load images via ImageMagick or GraphicsMagick,
letting it work with formats like DICOM.

It comes with bindings for
[C](http://libvips.github.io/libvips/API/current/using-from-c.html),
@@ -31,7 +31,7 @@ and the
Full bindings are available for [Ruby](https://rubygems.org/gems/ruby-vips),
[Python](https://pypi.python.org/pypi/pyvips),
[PHP](https://github.com/libvips/php-vips),
[.NET](https://www.nuget.org/packages/NetVips),
[C# / .NET](https://www.nuget.org/packages/NetVips),
[Go](https://github.com/davidbyttow/govips), and
[Lua](https://github.com/libvips/lua-vips). libvips
is used as an image processing engine by [sharp