Update env_var.md (#12702)
Update env_var.md (#12702)


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