[ImgBot] Optimize images - #2

*Total -- 5,684.69kb -> 4,791.11kb (15.72%)

/docs/pic/CRF.png -- 9.64kb -> 4.92kb (49.03%)
/docs/pic/line.png -- 2.21kb -> 1.31kb (40.63%)
/docs/pic/Word Art.png -- 409.46kb -> 288.62kb (29.51%)
/docs/pic/LSTM.png -- 46.38kb -> 33.18kb (28.46%)
/docs/pic/SVM.png -- 48.78kb -> 35.24kb (27.76%)
/docs/pic/sphx_glr_plot_roc_001.png -- 31.26kb -> 23.11kb (26.07%)
/WordArt.png -- 508.86kb -> 380.70kb (25.19%)
/docs/pic/WordArt.png -- 508.86kb -> 380.70kb (25.19%)
/docs/pic/ngram_cnn_highway_1.png -- 90.14kb -> 67.77kb (24.82%)
/docs/pic/fasttext-logo-color-web.png -- 12.17kb -> 9.32kb (23.44%)
/docs/pic/github-logo.png -- 2.67kb -> 2.05kb (23.41%)
/docs/pic/RDL.png -- 94.24kb -> 72.41kb (23.16%)
/docs/pic/Random Projection.png -- 30.76kb -> 23.86kb (22.42%)
/docs/pic/HAN.png -- 109.08kb -> 85.89kb (21.26%)
/docs/pic/RMDL.png -- 269.69kb -> 216.69kb (19.65%)
/docs/pic/F1.png -- 26.93kb -> 21.71kb (19.36%)
/docs/pic/CBOW.png -- 21.22kb -> 17.34kb (18.29%)
/docs/pic/RMDL_Results_small.png -- 89.92kb -> 73.68kb (18.06%)
/docs/pic/RNN.png -- 93.56kb -> 76.96kb (17.75%)
/docs/pic/RMDL_Results.png -- 1,184.43kb -> 976.53kb (17.55%)
/docs/pic/RF.png -- 87.15kb -> 72.16kb (17.2%)
/docs/pic/BPW.png -- 27.60kb -> 23.15kb (16.14%)
/docs/pic/RDL.jpg -- 107.58kb -> 91.90kb (14.58%)
/docs/pic/RMDL.jpg -- 240.26kb -> 213.44kb (11.16%)
/docs/pic/GitHub-Mark-64px.png -- 2.56kb -> 2.32kb (9.37%)
/docs/pic/KNN.png -- 52.24kb -> 48.24kb (7.66%)
/docs/pic/OverviewTextClassification.png -- 242.94kb -> 231.18kb (4.84%)
/docs/pic/TSNE.png -- 23.95kb -> 22.94kb (4.24%)
/docs/pic/Autoencoder.png -- 144.23kb -> 139.99kb (2.94%)
/docs/pic/GitHub-Mark-32px.png -- 1.67kb -> 1.64kb (1.87%)
/docs/pic/HDLTex.png -- 804.20kb -> 792.96kb (1.4%)
/docs/pic/CNN.png -- 360.02kb -> 359.19kb (0.23%)

Signed-off-by: ImgBotApp <[email protected]>