message: Change link to documentation into HTTPS
diff: @@ -13,7 +13,7 @@ LABEL maintainer="Bjoern Kimminich <bjoern.kimminich@owasp.org>" \
  org.opencontainers.image.description="Probably the most modern and sophisticated insecure web application" \
  org.opencontainers.image.authors="Bjoern Kimminich <bjoern.kimminich@owasp.org>" \
  org.opencontainers.image.vendor="Open Web Application Security Project" \
  - org.opencontainers.image.documentation="http://help.owasp-juice.shop" \
  + org.opencontainers.image.documentation="https://help.owasp-juice.shop" \
  org.opencontainers.image.licenses="MIT" \
  org.opencontainers.image.version="10.0.0-SNAPSHOT" \
  org.opencontainers.image.url="https://owasp-juice.shop" \
  