Update the index page of doc, try to fix the image template bug.
Update the index page of doc, try to fix the image template bug.

Signed-off-by: Meaglith Ma <0bf2f355993f0dbbf12bb2dd47c4e488df6cbee3@huawei.com>

Lupino/containerops,imlidian/containerops,Huawei/containerops,Lupino/containerops,Huawei/containerops,Lupino/containerops,imlidian/containerops,crystaldust/containerops,imlidian/containerops,Lupino/containerops,imlidian/containerops,Lupino/containerops,imlidian/containerops,crystaldust/containerops,crystaldust/containerops,crystaldust/containerops,genedna/containerops,Huawei/containerops,genedna/containerops,genedna/containerops,genedna/containerops,genedna/containerops,Lupino/containerops,crystaldust/containerops,genedna/containerops,Huawei/containerops,crystaldust/containerops,imlidian/containerops,imlidian/containerops,crystaldust/containerops,Lupino/containerops,Huawei/containerops,genedna/containerops,Huawei/containerops,Huawei/containerops