Discord: Remove extra newlines around links

Since links are converted into embeds, links put on their own line often
lead to extra newlines that looks pretty weird. They should now be
stripped.

stripmd.go

@@ -44,6 +44,16 @@ func StripAltText(md string, links bool) (string, []*dg.MessageEmbed) {
 				out += md[URLStart : URLEnd+1]
 			}
 			previousURLEnd = URLEnd
+			// Removing links often leaves a load of extra newlines which look weird, this removes them.
+			if links {
+				next := 2
+				for md[URLEnd+next] == '\n' {
+					next++
+				}
+				if next >= 3 {
+					previousURLEnd += next - 2
+				}
+			}
 			altTextStart, URLStart, URLEnd = -1, -1, -1
 			continue
 		}