Removed copy-paste error from file "List of Proper Nouns.txt"

[awmc000]

The text appeared to be some instructions on computing the Lorge Readability Index from the study it is proposed in. Strangely, that change is not showing in the diff. Not sure why that is. It also appeared that a number of names were combined on one line, but that issue was fixed automatically when I opened the github web editor.