Fix + character being written as + (#317)

Adam.S

20.43.2020 5e250268bd1bf333672bd111c070cef88f963247

 layouts/_default/single.html

@@ -30,7 +30,7 @@
      </p>
      {{ end }}
      {{/* Hugo uses Go's date formatting is set by example. Here are two formats */}}
      <time class="f6 mv4 dib tracked" datetime="{{ .Date.Format "2006-01-02T15:04:05Z07:00" }}">
      <time class="f6 mv4 dib tracked" {{ printf `datetime="%s"` (.Date.Format "2006-01-02T15:04:05Z07:00") | safeHTMLAttr }}>
        {{- .Date.Format "January 2, 2006" -}}
      </time>