Render access log template as text instead of HTML (go-gitea#23013) (go-gitea#23025)

Backport go-gitea#23013

Fix go-gitea#22906 (comment)

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
(cherry picked from commit 8fa62be)

Author: yardenshoham

modules/context/access_log.go

@@ -7,8 +7,8 @@ package context
 import (
 	"bytes"
 	"context"
-	"html/template"
 	"net/http"
+	"text/template"
 	"time"
 
 	"code.gitea.io/gitea/modules/log"