first draft of README

README.rst

@@ -115,7 +115,7 @@ Package sets and toolchains
 MPSD software releases
 ~~~~~~~~~~~~~~~~~~~~~~
 
-As ``explained in the MPSD HPC documentation <https://computational-science.mpsd.mpg.de/docs/mpsd-hpc.html#software>``__, we
+As `explained in the MPSD HPC documentation <https://computational-science.mpsd.mpg.de/docs/mpsd-hpc.html#software>`__, we
 label software releases available on the HPC using a naming scheme of the year
 (such as ``23``) and a letter starting from ``a``. There is an exception that
 the first available software version is ``dev-23a`` (starting with ``dev-`` to