Fix scala doc build break for v1.3.1 (#13820)
Fix scala doc build break for v1.3.1 (#13820)

* Fix doc build break for v1.3.1

* ignore errors on v1.3.x during scala docs gen

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