README.md tiny improve (#2320)
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and provides detailed documentation for users. (Structure / Usage / API / Configs...)
And here are links of other **HugeGraph** component/repositories:
-1. [hugegraph-toolchain](https://github.com/apache/incubator-hugegraph-toolchain) (graph **[loader](https://github.com/apache/incubator-hugegraph-toolchain/tree/master/hugegraph-loader)/[dashboard](https://github.com/apache/incubator-hugegraph-toolchain/tree/master/hugegraph-hubble)/[tool](https://github.com/apache/incubator-hugegraph-toolchain/tree/master/hugegraph-tools)/[client](https://github.com/apache/incubator-hugegraph-toolchain/tree/master/hugegraph-client)**)
-2. [hugegraph-computer](https://github.com/apache/incubator-hugegraph-computer) (matched **graph computing** system)
-3. [hugegraph-commons](https://github.com/apache/incubator-hugegraph-commons) (**common & rpc** module)
+1. [hugegraph-toolchain](https://github.com/apache/incubator-hugegraph-toolchain) (graph tools **[loader](https://github.com/apache/incubator-hugegraph-toolchain/tree/master/hugegraph-loader)/[dashboard](https://github.com/apache/incubator-hugegraph-toolchain/tree/master/hugegraph-hubble)/[tool](https://github.com/apache/incubator-hugegraph-toolchain/tree/master/hugegraph-tools)/[client](https://github.com/apache/incubator-hugegraph-toolchain/tree/master/hugegraph-client)**)
+2. [hugegraph-computer](https://github.com/apache/incubator-hugegraph-computer) (integrated **graph computing** system)
+3. [hugegraph-commons](https://github.com/apache/incubator-hugegraph-commons) (**common & rpc** libs)
4. [hugegraph-website](https://github.com/apache/incubator-hugegraph-doc) (**doc & website** code)
## License
