README-ENGINES: fix the link to the provider API README
@@ -9,7 +9,7 @@ interface for adding alternative implementations of cryptographic
primitives, most notably for integrating hardware crypto devices.
The ENGINE interface has its limitations and it has been superseeded
-by the [PROVIDER API](README-Provider.md), it is deprecated in OpenSSL
+by the [PROVIDER API](README-PROVIDERS.md), it is deprecated in OpenSSL
version 3.0. The following documentation is retained as an aid for
users who need to maintain or support existing ENGINE implementations.
Support for new hardware devices or new algorithms should be added
