Update governments.yml

[reinerBa]

Add @Oberverwaltungsgericht-Rheinland-Pfalz

Thanks for the contribution! Below is a template that can make it easier when submitting your Organization:

Your Organization: ACME Agency
GitHub Organization url: @Oberverwaltungsgericht-Rheinland-Pfalz
Country/Locality: Germany/Rhineland Palatinate

Inclusion requirements:

• Referenced account is an Organization not a User^
• If this is a government project, your Organization's description should include a reference to your country/agency.
• Make sure your Organization includes at least one public repository
• Please also include a URL for your organization that links back to your organization or agency homepage.