Renamed thirdventricle previews to 1-indexed instead 0-1indexed

...eview_images/thirdventricle_timeseries2_300slice_0001.tif

...eview_images/thirdventricle_timeseries2_300slice_0002.tif

...eview_images/thirdventricle_timeseries2_300slice_0003.tif

...eview_images/thirdventricle_timeseries2_300slice_0004.tif

...eview_images/thirdventricle_timeseries2_300slice_0005.tif

...eview_images/thirdventricle_timeseries2_300slice_0006.tif

...eview_images/thirdventricle_timeseries2_300slice_0007.tif

...eview_images/thirdventricle_timeseries2_300slice_0008.tif

...eview_images/thirdventricle_timeseries2_300slice_0009.tif

...eview_images/thirdventricle_timeseries2_300slice_0010.tif

...eview_images/thirdventricle_timeseries2_300slice_0011.tif

...eview_images/thirdventricle_timeseries2_300slice_0012.tif

...eview_images/thirdventricle_timeseries2_300slice_0013.tif

...eview_images/thirdventricle_timeseries2_300slice_0014.tif

...eview_images/thirdventricle_timeseries2_300slice_0015.tif

...eview_images/thirdventricle_timeseries2_300slice_0016.tif

...eview_images/thirdventricle_timeseries2_300slice_0017.tif

...eview_images/thirdventricle_timeseries2_300slice_0018.tif

...eview_images/thirdventricle_timeseries2_300slice_0019.tif

...eview_images/thirdventricle_timeseries2_300slice_0020.tif