Update readme.md

update readme with archival note

Author: suyashb95

readme.md

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 A python project which downloads words from English Wiktionary ([en.wiktionary.org](https://en.wiktionary.org)) and parses articles' content in an easy to use JSON format. Right now, it parses etymologies, definitions, pronunciations, examples, audio links and related words.
 
+Note: This project will not be maintained since there are many free dictionary APIs now, please see - https://dictionaryapi.dev/ for example
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 [![Downloads](http://pepy.tech/badge/wiktionaryparser)](http://pepy.tech/project/wiktionaryparser)
 
 #### JSON structure