docs: add email list subscribe guide

[iLern]

issue #257

Add mail subscribe way in README

[iLern]

I committed to my branch issue#257 but saw 1 workflow awaiting approval. Does it normal? Or did I do anything wrong?

[liuxiaocs7]

Hi, @iLern, you could refer this to link pr with associated issue, once the pr is merged the issue will be closed automatically.

[liuxiaocs7]

I committed to my branch issue#257 but saw 1 workflow awaiting approval. Does it normal? Or did I do anything wrong?

For First-time contributors, CI will not be triggered automatically, it needs the manager of the repository to help trigger, just wait.

[imbajin]

Some translation could be improved by GPT/New Bing, try to paste the phrase and ask it for the improvement~ 🤖 @coderzc @simon824 @javeme @simon824 @liuxiaocs7 @msgui @Radeity @chakkk309 @WhelanLabs

GPT Improvement Example(click to expand)

Here are some suggestions for improving the markdown English description: - In the first sentence, you can use "an email list" instead of "email list" to be more grammatically correct. - In the second bullet point, you can use "for both development and user discussions" instead of "for development and users discussions" to avoid confusion between singular and plural forms. - In the third sentence, you can use "the following steps" instead of "following steps" to be more specific. - In the fourth sentence, you can use "a reply" instead of "the confirmation email" to avoid repetition. - In the fifth sentence, you can use "another confirmation email" instead of "another email" to be more clear. - In the seventh sentence, you can use "anytime you want" instead of "anytime you want" to be more natural. - In the ninth bullet point, you can use "send an email" instead of "send mail" to be more consistent with the rest of the text. - In the last sentence, you can use "More information about subscribing to mailing lists can be found at:" instead of "More information of mailing subscribe can be found at:" to be more grammatical and accurate. The improved paragraph is: ### Subscribe to the mailing list HugeGraph offers an email list for development and user discussions. - hugegraph-dev: [dev@hugegraph.apache.org](mailto:dev@hugegraph.apache.org) for both development and user discussions. Subscribe to the mailing list by following these steps: - Email [dev-subscribe@hugegraph.apache.org](mailto:dev-subscribe@hugegraph.apache.org) from your email account, and then you will receive a confirmation email. - Reply to the confirmation email to confirm your subscription. Then, you will receive another confirmation email. - Now you are a subscriber of the mailing list. If you have more questions, just email to the mailing list and someone will reply to you soon. - If you want to unsubscribe from the mailing list, just email [dev-unsubscribe@hugegraph.apache.org](mailto:dev-unsubscribe@hugegraph.apache.org) and follow the steps in the confirmation email. You can subscribe to the mailing list anytime you want. Additionally, you can check [historical emails / all emails](https://lists.apache.org/list.html?dev@hugegraph.apache.org) easily (even if you are not subscribed to the list). Some notes: - If you don't receive the confirmation email, please send an email after 24 hours later. - Don't send an email to **dev** until you subscribe to the mailing list successfully (otherwise the email will be banned). More information about subscribing to mailing lists can be found at: - http://apache.org/foundation/mailinglists.html#subscribing

BTW, could click Resolve Conversation after u addressed the comment.

[liuxiaocs7]

Nice Prompt, for easier reference, copy it here.

检查上面的markdown英文描述，是否有语病或可以改进的地方，请指出具体的点，最后输出改进后的完整段落（注意保留原格式）