LANGUAGE-BINDINGS.md: mention python-rocksdb

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/5086

Differential Revision: D14542212

Pulled By: siying

fbshipit-source-id: db2f38a3f7c9b64532655a5d4ac4b7715c392883

LANGUAGE-BINDINGS.md

@@ -1,7 +1,9 @@
 This is the list of all known third-party language bindings for RocksDB. If something is missing, please open a pull request to add it.
 
 * Java - https://github.com/facebook/rocksdb/tree/master/java
-* Python - http://pyrocksdb.readthedocs.org/en/latest/
+* Python
+    * http://python-rocksdb.readthedocs.io/en/latest/
+    * http://pyrocksdb.readthedocs.org/en/latest/ (unmaintained)
 * Perl - https://metacpan.org/pod/RocksDB
 * Node.js - https://npmjs.org/package/rocksdb
 * Go - https://github.com/tecbot/gorocksdb