Typo in DownloadRedditDataset.py

[dianeoyen]

Fix: rewrite line 61 of DownloadRedditDataset.py to reference each0 rather than each.

Error message:

Traceback (most recent call last):
File "DownloadRedditDataset.py", line 98, in
downloadImagesforAllJsons(jsonDir,outputDir)
File "DownloadRedditDataset.py", line 83, in downloadImagesforAllJsons
downloadFromJson(os.path.join(jsonDir,f),outDir)
File "DownloadRedditDataset.py", line 76, in downloadFromJson
downloadImages(imageURLList,imageNameList,os.path.join(outDir,jsonGraph['title']))
File "DownloadRedditDataset.py", line 61, in downloadImages
imageNameList[each[1]] = (None,None,None)
NameError: global name 'each' is not defined