Update SMPL url

Summary: Fix issue #1306

Reviewed By: kjchalup

Differential Revision: D38941342

fbshipit-source-id: 306ea698ab6af22b874df6e2abdaa9021b65e1ef

Author: bottler

docs/tutorials/render_densepose.ipynb

@@ -129,7 +129,7 @@
     "## Load the SMPL model\n",
     "\n",
     "#### Download the SMPL model\n",
-    "- Go to http://smpl.is.tue.mpg.de/downloads and sign up.\n",
+    "- Go to https://smpl.is.tue.mpg.de/download.php and sign up.\n",
     "- Download SMPL for Python Users and unzip.\n",
     "- Copy the file male template file **'models/basicModel_m_lbs_10_207_0_v1.0.0.pkl'** to the data/DensePose/ folder.\n",
     "   - rename the file to **'smpl_model.pkl'** or rename the string where it's commented below\n",