Videos/2019.09 - Opening FITS images with pywwt.ipynb: fix image link

Videos/2019.09 - Opening FITS images with pywwt.ipynb

@@ -89,7 +89,7 @@
    "source": [
     "If you're using JupyterLab, right-click to the side of the viewer after it loads and select \"Create New View for Output.\":\n",
     "\n",
-    "![](data/separate-pane-instructions.jpg)\n",
+    "![](../data/separate-pane-instructions.jpg)\n",
     "\n",
     "Examine the area around the image by clicking and dragging the viewer or by pressing 'I', 'J', 'K', and 'L' as directional keys. Pinch in/out or press 'Z'/'X' to zoom."
    ]