README: update link to Rust extensions (#1082)

Author: robsdedude

README.rst

@@ -50,7 +50,7 @@ You may want to have a look at the available Rust extensions for this driver
 for better performance. The Rust extensions are not installed by default. For
 more information, see `neo4j-rust-ext`_.
 
-.. _neo4j-rust-ext: https://github.com/neo4j-drivers/neo4j-python-driver-rust-ext
+.. _neo4j-rust-ext: https://github.com/neo4j/neo4j-python-driver-rust-ext
 
 
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