appview/pages/markup: Use QueryEscape, not PathEscape, for query params

Signed-off-by: Runxi Yu <[e-mail]>

appview/pages/markup/markdown.go

···
 	repoName := fmt.Sprintf("%s/%s", rctx.RepoInfo.OwnerDid, rctx.RepoInfo.Name)
 
 	query := fmt.Sprintf("repo=%s&ref=%s&path=%s&raw=true",
-		url.PathEscape(repoName), url.PathEscape(rctx.RepoInfo.Ref), actualPath)
+		url.QueryEscape(repoName), url.QueryEscape(rctx.RepoInfo.Ref), actualPath)
 
 	parsedURL := &url.URL{
 		Scheme:   scheme,