Hints for frescobaldi in universe

Warnings

• asv-description-enum-item-invalid
  org.frescobaldi.Frescobaldi.metainfo.xml:176 - ul
  Enumerations must only have list items (<li/>) as children.
• asv-description-has-plaintext-url
  org.frescobaldi.Frescobaldi.metainfo.xml:160 - ul
  The description contains a web URL in plain text. This is not allowed, please use the <url/> tag instead to share links.
• asv-description-enum-item-invalid
  org.frescobaldi.Frescobaldi.metainfo.xml:203 - ul
  Enumerations must only have list items (<li/>) as children.