because the url lacks a trailing /, many webservers will issue a
redirect to the canonical url with trailing slash for directory index
w/index.htm(l).
Append a slash to avoid this.
                if p.Site.Config.UglyUrls {
                        return template.HTML(MakePermalink(string(p.Site.BaseUrl), strings.TrimSpace(p.Section)+"/"+p.Slug+"."+p.Extension))
                } else {
-                       return template.HTML(MakePermalink(string(p.Site.BaseUrl), strings.TrimSpace(p.Section)+"/"+p.Slug))
+                       return template.HTML(MakePermalink(string(p.Site.BaseUrl), strings.TrimSpace(p.Section)+"/"+p.Slug+"/"))
                }
        } else if len(strings.TrimSpace(p.Url)) > 2 {
                return template.HTML(MakePermalink(string(p.Site.BaseUrl), strings.TrimSpace(p.Url)))