Update liboqs readme to point to oqs-provider instead of deprecated o…

…penssl1.1.1 fork [skip-ci]

This PR updates the OpenSSL link to point to oqs-provider now that OpenSSL1.1.1 is deprecated.

README.md

@@ -26,7 +26,7 @@ liboqs provides:
 - a common API for these algorithms
 - a test harness and benchmarking routines
 
-liboqs is part of the **Open Quantum Safe (OQS)** project led by [Douglas Stebila](https://www.douglas.stebila.ca/research/) and [Michele Mosca](http://faculty.iqc.uwaterloo.ca/mmosca/), which aims to develop and integrate into applications quantum-safe cryptography to facilitate deployment and testing in real world contexts. In particular, OQS provides prototype integrations of liboqs into TLS and SSH, through [OpenSSL](https://github.com/open-quantum-safe/openssl) and [OpenSSH](https://github.com/open-quantum-safe/openssh-portable).
+liboqs is part of the **Open Quantum Safe (OQS)** project led by [Douglas Stebila](https://www.douglas.stebila.ca/research/) and [Michele Mosca](http://faculty.iqc.uwaterloo.ca/mmosca/), which aims to develop and integrate into applications quantum-safe cryptography to facilitate deployment and testing in real world contexts. In particular, OQS provides prototype integrations of liboqs into TLS and SSH, through [OpenSSL](https://github.com/open-quantum-safe/oqs-provider) and [OpenSSH](https://github.com/open-quantum-safe/openssh-portable).
 
 More information on OQS can be found [here](https://openquantumsafe.org/) and in the [associated](https://openquantumsafe.org/papers/SAC-SteMos16.pdf) [whitepapers](https://openquantumsafe.org/papers/NISTPQC-CroPaqSte19.pdf).