[ImgBot] Optimize images
*Total -- 4,436.86kb -> 2,415.18kb (45.57%)
/docs/examples/images/Figure_9_2_3_m.png -- 159.50kb -> 64.97kb (59.26%)
/docs/examples/images/Figure_9_2_1_m.png -- 158.61kb -> 64.91kb (59.07%)
/docs/examples/images/Figure_9_2_2_m.png -- 162.21kb -> 66.73kb (58.87%)
/docs/examples/images/Figure_9_2_4_m.png -- 149.61kb -> 64.63kb (56.8%)
/docs/examples/images/Figure_9_2_5_m.png -- 153.28kb -> 67.67kb (55.85%)
/docs/examples/images/Figure_9_2_3.png -- 650.40kb -> 349.10kb (46.32%)
/docs/examples/images/Figure_9_2_2.png -- 652.03kb -> 350.91kb (46.18%)
/docs/examples/images/Figure_9_2_1.png -- 665.20kb -> 363.38kb (45.37%)
/docs/examples/images/Figure_9_2_4.png -- 641.42kb -> 362.51kb (43.48%)
/docs/examples/images/Figure_9_2_5.png -- 651.89kb -> 371.54kb (43.01%)
/spectrafit/plugins/img/SpectraFit.png -- 19.67kb -> 14.06kb (28.56%)
/docs/plugins/images/pptx_visualizer.png -- 373.04kb -> 274.76kb (26.35%)
Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>
