Update documentation for count_tokens_from_str (#11800)
Update documentation for count_tokens_from_str (#11800)


larroy/mxnet,ForkedReposBak/mxnet,yajiedesign/mxnet,eric-haibin-lin/mxnet,dmlc/mxnet,leezu/mxnet,reminisce/mxnet,sxjscience/mxnet,yajiedesign/mxnet,leezu/mxnet,ForkedReposBak/mxnet,reminisce/mxnet,larroy/mxnet,apache/incubator-mxnet,sxjscience/mxnet,apache/incubator-mxnet,zhreshold/mxnet,eric-haibin-lin/mxnet,mbaijal/incubator-mxnet,ptrendx/mxnet,leezu/mxnet,szha/mxnet,szha/mxnet,dmlc/mxnet,szha/mxnet,dmlc/mxnet,szha/mxnet,sxjscience/mxnet,zhreshold/mxnet,mbaijal/incubator-mxnet,ForkedReposBak/mxnet,dmlc/mxnet,leezu/mxnet,dmlc/mxnet,ForkedReposBak/mxnet,DickJC123/mxnet,leezu/mxnet,tlby/mxnet,eric-haibin-lin/mxnet,yajiedesign/mxnet,ptrendx/mxnet,reminisce/mxnet,szha/mxnet,tlby/mxnet,zhreshold/mxnet,yajiedesign/mxnet,reminisce/mxnet,szha/mxnet,eric-haibin-lin/mxnet,ptrendx/mxnet,larroy/mxnet,DickJC123/mxnet,yajiedesign/mxnet,tlby/mxnet,dmlc/mxnet,mbaijal/incubator-mxnet,ptrendx/mxnet,reminisce/mxnet,rahul003/mxnet,ptrendx/mxnet,tlby/mxnet,reminisce/mxnet,sxjscience/mxnet,yajiedesign/mxnet,ptrendx/mxnet,leezu/mxnet,tlby/mxnet,rahul003/mxnet,szha/mxnet,larroy/mxnet,reminisce/mxnet,ForkedReposBak/mxnet,szha/mxnet,mbaijal/incubator-mxnet,mbaijal/incubator-mxnet,dmlc/mxnet,apache/incubator-mxnet,zhreshold/mxnet,tlby/mxnet,tlby/mxnet,rahul003/mxnet,zhreshold/mxnet,ptrendx/mxnet,rahul003/mxnet,reminisce/mxnet,eric-haibin-lin/mxnet,rahul003/mxnet,ptrendx/mxnet,ForkedReposBak/mxnet,yajiedesign/mxnet,DickJC123/mxnet,larroy/mxnet,rahul003/mxnet,eric-haibin-lin/mxnet,yajiedesign/mxnet,dmlc/mxnet,tlby/mxnet,larroy/mxnet,eric-haibin-lin/mxnet,mbaijal/incubator-mxnet,sxjscience/mxnet,ptrendx/mxnet,larroy/mxnet,reminisce/mxnet,mbaijal/incubator-mxnet,yajiedesign/mxnet,rahul003/mxnet,zhreshold/mxnet,ptrendx/mxnet,eric-haibin-lin/mxnet,ForkedReposBak/mxnet,DickJC123/mxnet,zhreshold/mxnet,reminisce/mxnet,zhreshold/mxnet,apache/incubator-mxnet,sxjscience/mxnet,eric-haibin-lin/mxnet,ForkedReposBak/mxnet,sxjscience/mxnet,rahul003/mxnet,ForkedReposBak/mxnet,dmlc/mxnet,mbaijal/incubator-mxnet,leezu/mxnet,rahul003/mxnet,larroy/mxnet,szha/mxnet,tlby/mxnet,tlby/mxnet,sxjscience/mxnet,leezu/mxnet,zhreshold/mxnet,mbaijal/incubator-mxnet,larroy/mxnet,leezu/mxnet,sxjscience/mxnet