Fix reading time not displaying due to .Site context in dict partial
The details.html partial receives a dict context via:
partial "article/components/details" (dict "Page" $Page "IsList" $IsList)
When the dot context is a dict, .Site resolves to nil, so
.Site.Params.article.readingTime always returns empty/false,
causing the reading time to never display.
Lines 40 and 67 of the same file already correctly use
$Page.Site.Params — this fixes line 31 to be consistent.
Co-authored-by: delize <4028612+delize@users.noreply.github.com>
