Make newsletter helper label clear to complaint with GDPR (#357)

* Fix link to email address

See https://github.com/hossainemruz/toha/issues/7

* ✏️  update newsletter helper to be more GDPR compliant

Signed-off-by: jbleduigou <jb.leduigou@gmail.com>

* Add more translations

Signed-off-by: hossainemruz <hossainemruz@gmail.com>

Co-authored-by: Emruz Hossain <hossainemruz@gmail.com>

i18n/cn.toml

@@ -33,7 +33,7 @@ other = "通过电子邮件接收最新信息"
 other = "填入 E-mail"
 
 [newsletter_warning]
-other = "我们绝不会与任何人共享您的电子邮件。"
+other = "输入您的电子邮件地址，即表示您同意接收本网站的时事通讯"
 
 [submit]
 other = "提交"