x/pkgsite: trim the non text elements from subdirectories synopsis

[sevki]

synopsis here (I believe this is the line https://github.com/golang/pkgsite/blob/master/content/static/html/pages/subdirectories.tmpl#L19) looks really awkward

as opposed to the

may I suggest rendering that synopsis to html and removing all non text html elements from that section? something like this might work

depth := 0
summary := bytes.NewBuffer(nil)
for {
	tt := z.Next()
	switch tt {
	case html.ErrorToken:
		break
	case html.TextToken:
		summary.Write(z.Text())
}
return summary.String()

[julieqiu]

@sevki - thanks for the feedback!

may I suggest rendering that synopsis to html and removing all non text html elements from that section? something like this might work

Feel free to send us a CL!

[sevki]

@julieqiu sure. Will do, let me check Monday if we have your corp CLA signed :)