rm arxiv harmful text link, add link to paper

README.md

@@ -75,7 +75,7 @@ The file is tab separated, in CoNLL format, with line breaks between tweets.
 * PoS labels are not present for all tweets, but where they could be found in the Ritter data, they're given. 
 * In cases where a URI could not be agreed, or was not present in DBpedia, the linking URI is `NIL`.
 
-See the paper for a full description of the methodology.
+See the paper, [Analysis of Named Entity Recognition and Linking for Tweets](http://www.derczynski.com/papers/ner_single.pdf) for a full description of the methodology.
 
 
 ### Supported Tasks and Leaderboards
@@ -164,7 +164,7 @@ The data was public at the time of collection. User names are preserved.
 
 ### Social Impact of Dataset
 
-There's a risk of user-deleted content being in this data. The data has NOT been vetted for any content, so there's a risk of [harmful text](https://arxiv.org/abs/2204.14256) content.
+There's a risk of user-deleted content being in this data. The data has NOT been vetted for any content, so there's a risk of harmful text.
 
 ### Discussion of Biases