content/static/html/helpers: fix links header
At the moment the "Links" header is always displayed. It should only be
displayed if there are links.
Trust: Julie Qiu
Run-TryBot: Julie Qiu
TryBot-Result: kokoro
{{else}}
Repository URL not available.
{{end}}
+ {{if or .Details.ReadmeLinks .Details.DocLinks .Details.ModuleReadmeLinks}}
<div class="UnitMeta-header">Links</div>
+ {{end}}
{{template "unit_meta_links" .Details.ReadmeLinks}}
{{template "unit_meta_links" .Details.DocLinks}}
{{template "unit_meta_links" .Details.ModuleReadmeLinks}}
