Update MOOC link in README.md

Author: stewartchrisecmwf

README.md

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 # MOOC Machine Learning in Weather & Climate - Jupyter notebook exercises
 
-This repository hosts the [Jupyter notebook](https://jupyter.org/) based exercises of the Massive Open Online Course (MOOC) on Machine Learning in Weather & Climate https://www.ecmwf.int/mlwc-mooc.
+This repository hosts the [Jupyter notebook](https://jupyter.org/) based exercises of the Massive Open Online Course (MOOC) on Machine Learning in Weather & Climate, which can now be found on ECMWF's learning platform https://learning.ecmwf.int/.
 
 The notebook files can be found in the subdirectories corresponding to each tier of the MOOC. These include the following:
 
@@ -24,4 +24,4 @@ The notebooks can either be downloaded and run on participants' own computers, o
 
 ## License
 
-Unless otherwise stated, the notebooks fall under [Apache License 2.0](https://github.com/ecmwf-projects/mooc-machine-learning-weather-climate/blob/main/LICENSE). In applying this licence, ECMWF does not waive the privileges and immunities granted to it by virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
+Unless otherwise stated, the notebooks fall under [Apache License 2.0](https://github.com/ecmwf-projects/mooc-machine-learning-weather-climate/blob/main/LICENSE). In applying this licence, ECMWF does not waive the privileges and immunities granted to it by virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.