[ImgBot] Optimize images

*Total -- 410.75kb -> 266.35kb (35.15%)

/images/springMVC/clazz/image-20200123090851644.png -- 41.69kb -> 21.54kb (48.33%)
/images/springMVC/clazz/image-20200123091445694.png -- 67.88kb -> 38.80kb (42.85%)
/images/springMVC/clazz/image-20200123093032179.png -- 42.59kb -> 24.42kb (42.66%)
/images/springMVC/clazz/image-20200123085946476.png -- 46.09kb -> 27.09kb (41.23%)
/images/springMVC/clazz/image-20200123094439617.png -- 24.29kb -> 16.13kb (33.57%)
/images/springMVC/clazz/image-20200123085756168.png -- 73.68kb -> 49.48kb (32.84%)
/images/springMVC/clazz/image-20200123093733129.png -- 6.16kb -> 4.38kb (28.98%)
/images/springMVC/clazz/image-20200123090442409.png -- 6.23kb -> 4.48kb (28.17%)
/images/springMVC/clazz/image-20200123085741347.png -- 102.14kb -> 80.04kb (21.64%)

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