For Goupilmtos15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:goupilmtos:devel:languages:python/Goupilmtos15.6/home:goupilmtos:devel:languages:python.repo
zypper refresh
zypper install python-azure-cognitiveservices-language-spellcheck
For Goupilmtos15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:goupilmtos:devel:languages:python/Goupilmtos15.5/home:goupilmtos:devel:languages:python.repo
zypper refresh
zypper install python-azure-cognitiveservices-language-spellcheck