[ImgBot] Optimize images (#949)

*Total -- 7,048.58kb -> 6,712.49kb (4.77%)

/content/zh-cn/docs/psyco/shaanxi/zhang-ruiguo/doctor.jpg -- 185.12kb -> 113.31kb (38.79%)
/static/images/medicine/gel/Estrogel-Estradiol-upscaled.jpg -- 353.03kb -> 313.53kb (11.19%)
/static/images/medicine/gel/estrogel-us-a.jpg -- 5.02kb -> 4.50kb (10.35%)
/static/images/medicine/gel/oestrogel-tw-pump.jpg -- 192.62kb -> 175.26kb (9.01%)
/static/images/medicine/gel/oestraclin-es.jpg -- 16.04kb -> 14.66kb (8.58%)
/static/images/medicine/gel/estreva-kr.jpg -- 9.55kb -> 8.90kb (6.83%)
/static/images/medicine/gel/gynokadin-de.jpg -- 8.95kb -> 8.36kb (6.58%)
/static/images/srs/thailand/chettawut/post-3.jpg -- 2,323.82kb -> 2,196.25kb (5.49%)
/content/zh-cn/docs/psyco/guangdong/shenzhen-kangning/proof-2.jpg -- 1,150.04kb -> 1,106.56kb (3.78%)
/content/zh-cn/docs/hrt/puth/chang-xu/doctor.jpg -- 18.93kb -> 18.46kb (2.51%)
/content/zh-cn/docs/psyco/shaanxi/zhang-ruiguo/proof.jpg -- 1,368.96kb -> 1,349.68kb (1.41%)
/content/zh-cn/docs/psyco/jiangsu/cao-qiuyun/proof.jpg -- 1,174.87kb -> 1,161.94kb (1.1%)
/content/zh-cn/docs/srs/china/sh411/sh411-tracheal-shave/1.jpg -- 91.99kb -> 91.45kb (0.58%)
/content/zh-cn/docs/srs/china/sh411/sh411-tracheal-shave/2-2.jpg -- 149.64kb -> 149.63kb (0%)

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