Fix link in interpreter.rst (#1458)

Link to internal docs currently points to compiler.md, changed it to point to interpreter.md

Author: ndunnett

internals/interpreter.rst

@@ -5,4 +5,4 @@ The bytecode interpreter
 ========================
 
 This document is now part of the
-`CPython Internals Docs <https://github.com/python/cpython/blob/main/InternalDocs/compiler.md>`_.
+`CPython Internals Docs <https://github.com/python/cpython/blob/main/InternalDocs/interpreter.md>`_.