Fix extra curly brace breaking release compare (#15988)

Author: kdumontnu

templates/repo/branch_dropdown.tmpl

@@ -22,7 +22,7 @@
 			{{end}}
 			{{range .root.Tags}}
 				{{if $release}}
-					<div class="item tag {{if eq $release.TagName .}}selected{{end}}" data-url="{{$.root.RepoLink}}/compare/{{EscapePound .}}...{{if $release.IsDraft}}{{EscapePound $release.Target}}{{else}}}{{if $release.TagName}}{{EscapePound $release.TagName}}{{else}}{{EscapePound $release.Sha1}}{{end}}{{end}}">{{.}}</div>
+					<div class="item tag {{if eq $release.TagName .}}selected{{end}}" data-url="{{$.root.RepoLink}}/compare/{{EscapePound .}}...{{if $release.IsDraft}}{{EscapePound $release.Target}}{{else}}{{if $release.TagName}}{{EscapePound $release.TagName}}{{else}}{{EscapePound $release.Sha1}}{{end}}{{end}}">{{.}}</div>
 				{{else}}
 					<div class="item tag {{if eq $.root.BranchName .}}selected{{end}}" data-url="{{$.root.RepoLink}}/{{if $.root.PageIsCommits}}commits{{else}}src{{end}}/tag/{{EscapePound .}}{{if $.root.TreePath}}/{{EscapePound $.root.TreePath}}{{end}}">{{.}}</div>
 				{{end}}