[ImgBot] Optimize images

*Total -- 314.38kb -> 290.87kb (7.48%)

/assets/Jump_Search.jpg -- 18.41kb -> 14.87kb (19.23%)
/docs/javascript/img/source.gif -- 295.98kb -> 276.00kb (6.75%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Author: ImgBotApp