Improve model card with metadata and code link

README.md

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 license: mit
+library_name: fasttext
+pipeline_tag: text-classification
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-This is the fastText pretraining data filter targeting
-the LAMBADA DE task, discussed in the main text of the Perplexity
-Correlations paper: https://arxiv.org/abs/2409.05816
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+This is the fastText pretraining data filter targeting the LAMBADA DE task, discussed in the main text of the Perplexity Correlations paper: https://arxiv.org/abs/2409.05816
+
+Code: https://github.com/TristanThrush/perplexity-correlations