Bug 1552317 - Fix codespell errors for image/. r=tnikkel

image/Image.h

image/ImageMemoryReporter.h

image/ProgressTracker.h

image/RasterImage.cpp

image/SurfaceCache.cpp

image/SurfaceFilters.h

image/SurfacePipeFactory.h

image/VectorImage.cpp

image/decoders/icon/android/nsIconChannel.cpp

image/decoders/icon/gtk/nsIconChannel.cpp

image/decoders/nsGIFDecoder2.cpp

image/decoders/nsGIFDecoder2.h

image/decoders/nsJPEGDecoder.cpp

image/encoders/bmp/nsBMPEncoder.cpp

image/imgFrame.cpp

image/imgIContainer.idl

image/imgILoader.idl

image/imgLoader.cpp

image/imgRequestProxy.h

image/imgTools.cpp