Copy concepts/services-networking/endpoint-slices.md from en/ directory.

Author: shuuji3

content/ja/docs/contribute/suggesting-improvements.md

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+---
+title: Suggesting content improvements
+slug: suggest-improvements
+content_type: concept
+weight: 10
+card:
+  name: contribute
+  weight: 20
+---
+
+<!-- overview -->
+
+If you notice an issue with Kubernetes documentation, or have an idea for new content, then open an issue. All you need is a [GitHub account](https://github.com/join) and a web browser.
+
+In most cases, new work on Kubernetes documentation begins with an issue in GitHub. Kubernetes contributors
+then review, categorize and tag issues as needed. Next, you or another member
+of the Kubernetes community open a pull request with changes to resolve the issue.
+
+
+
+<!-- body -->
+
+## Opening an issue
+
+If you want to suggest improvements to existing content, or notice an error, then open an issue.
+
+1. Go to the bottom of the page and click the **Create an Issue** button. This redirects you
+ to a GitHub issue page pre-populated with some headers.
+2. Describe the issue or suggestion for improvement. Provide as many details as you can.
+3. Click **Submit new issue**.
+
+After submitting, check in on your issue occasionally or turn on GitHub notifications.
+Reviewers and other community members might ask questions before
+they can take action on your issue.
+
+## Suggesting new content
+
+If you have an idea for new content, but you aren't sure where it should go, you can
+still file an issue. Either:
+
+- Choose an existing page in the section you think the content belongs in and click **Create an issue**.
+- Go to [GitHub](https://github.com/kubernetes/website/issues/new/) and file the issue directly.
+
+## How to file great issues
+
+
+Keep the following in mind when filing an issue:
+
+- Provide a clear issue description. Describe what specifically is missing, out of date,
+  wrong, or needs improvement.
+- Explain the specific impact the issue has on users.
+- Limit the scope of a given issue to a reasonable unit of work. For problems
+  with a large scope, break them down into smaller issues. For example, "Fix the security docs"
+  is too broad, but "Add details to the 'Restricting network access' topic" is specific enough
+  to be actionable.
+- Search the existing issues to see if there's anything related or similar to the
+  new issue.
+- If the new issue relates to another issue or pull request, refer to it
+  either by its full URL or by the issue or pull request number prefixed
+  with a `#` character. For example, `Introduced by #987654`.
+- Follow the [Code of Conduct](/community/code-of-conduct/). Respect your
+fellow contributors. For example, "The docs are terrible" is not
+  helpful or polite feedback.
+
+