Update urls and maintainer name

portainer/Dockerfile

@@ -36,7 +36,7 @@ LABEL \
     io.hass.arch="${BUILD_ARCH}" \
     io.hass.type="addon" \
     io.hass.version=${BUILD_VERSION} \
-    maintainer="Franck Nijhof <frenck@addons.community>" \
+    maintainer="Nico Störzbach <nico@nstoerzbach.de>" \
     org.opencontainers.image.title="${BUILD_NAME}" \
     org.opencontainers.image.description="${BUILD_DESCRIPTION}" \
     org.opencontainers.image.vendor="Home Assistant Community Add-ons" \