doc: fix incorrect documentation for ImageWrapper.getPixelsType
Fix for-loop bug in image viewer. See #12303
Merge pull request #2552 from will-moore/viewer_save_apply_12303

Fix for-loop bug in image viewer. See #12303
Merge pull request #2548 from MicronOxford/doc-fix-getPixelsType

doc: fix incorrect documentation for ImageWrapper.getPixelsType