[skywalking] 01/01: Polish doc readme.

[wu...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

wusheng pushed a commit to branch doc-fix
in repository https://gitbox.apache.org/repos/asf/skywalking.git

commit cd57b886a85f8d3a8f2e2ceb1d186f0076265b04
Author: Wu Sheng <wu...@foxmail.com>
AuthorDate: Tue Apr 5 15:45:19 2022 +0800

    Polish doc readme.
---
 docs/README.md | 39 +++++++++++++++++++++++----------------
 1 file changed, 23 insertions(+), 16 deletions(-)

diff --git a/docs/README.md b/docs/README.md
index 40b20d3c0b..20b6c88213 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -1,31 +1,38 @@
 # Welcome
-**This is the official documentation of SkyWalking 9. Welcome to the SkyWalking community!**
-
-Here you can learn all you need to know about **SkyWalking**’s architecture, understand how to deploy and use SkyWalking, and contribute to the project based on SkyWalking's contributing guidelines.
 
-**NOTE: SkyWalking 8 uses brand new tracing APIs which are incompatible with all previous releases.**
-
-- **Concepts and Designs**. You'll find the core logic behind SkyWalking. You may start from here if you want to understand what is going on under our cool features and visualization.
+**This is the official documentation of SkyWalking 9. Welcome to the SkyWalking community!**
 
-- **Setup**. A guide to installing SkyWalking for different use cases. It is an observability platform that supports multiple observability modes.
+Here you can learn all you need to know about **SkyWalking**’s architecture, understand how to deploy and use
+SkyWalking, and contribute to the project based on SkyWalking's contributing guidelines.
 
-- **UI Introduction**. An introduction to the UI components and their features. 
+- **Concepts and Designs**. You'll find the core logic behind SkyWalking. You may start from here if you want to
+  understand what is going on under our cool features and visualization.
 
-- **Contributing Guides**. If you are a PMC member, a committer, or a new contributor, learn how to start contributing with these guides!
+- **Setup**. A guide to installing SkyWalking for different use cases. It is an observability platform that supports
+  multiple observability modes.
 
-- **Protocols**. The protocols show how agents/probes and the backend communicate with one another. Anyone interested in uplink telemetry data should definitely read this.
+- **Contributing Guides**. If you are a PMC member, a committer, or a new contributor, learn how to start contributing
+  with these guides!
 
-- **FAQs**. A manifest of known issues with setup and secondary developments processes. Should you encounter any problems, check here first.
+- **Protocols**. The protocols show how agents/probes and the backend communicate with one another. Anyone interested in
+  uplink telemetry data should definitely read this.
 
+- **FAQs**. A manifest of known issues with setup and secondary developments processes. Should you encounter any
+  problems, check here first.
 
 You might also find these links interesting:
 
-- The latest and old releases are all available at [Apache SkyWalking release page](https://skywalking.apache.org/downloads/). The change logs can be found [here](https://github.com/apache/skywalking/tree/master/changes).
+- The latest and old releases are all available
+  at [Apache SkyWalking release page](https://skywalking.apache.org/downloads/). The change logs can be
+  found [here](https://github.com/apache/skywalking/tree/master/changes).
 
-- [SkyWalking WIKI](https://cwiki.apache.org/confluence/display/SKYWALKING/Home) hosts the context of some changes and events.
+- [SkyWalking WIKI](https://cwiki.apache.org/confluence/display/SKYWALKING/Home) hosts the context of some changes and
+  events.
 
-- You can find the conference schedules, video recordings, and articles about SkyWalking in the [community resource catalog](https://github.com/OpenSkywalking/Community).
+- You can find the conference schedules, video recordings, and articles about SkyWalking in
+  the [community resource catalog](https://github.com/OpenSkywalking/Community).
 
-We're always looking for help to improve our documentation and codes, so please don’t hesitate to [file an issue](https://github.com/apache/skywalking/issues/new) if you see any problems. 
-Or better yet, directly contribute by submitting a pull request to help us get better!
+We're always looking for help to improve our documentation and codes, so please don’t hesitate
+to [file an issue](https://github.com/apache/skywalking/issues/new) if you see any problems. Or better yet, directly
+contribute by submitting a pull request to help us get better!