Update docs.

Author: shaomengwang

README.en-US.md

@@ -50,11 +50,11 @@ Welcome everyone to join the Alink open source user group to communicate.
 If `pyalink` or `pyalink-flink-***` was/were installed, please use `pip uninstall pyalink` or `pip uninstall pyalink-flink-***` to remove them.
 
 2. If `pip install` is slow of failed, refer to [this article](https://segmentfault.com/a/1190000006111096) to change the pip source, or use the following download links:
-    - Flink 1.13：[Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink-1.5.4-py3-none-any.whl) (MD5: a68fa2474bc52dc2181bc98787d3e2d3)
-    - Flink 1.12：[Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink_flink_1.12-1.5.4-py3-none-any.whl) (MD5: ed191adfd5bbaaacf979aa373a7a61f5)
-    - Flink 1.11：[Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink_flink_1.11-1.5.4-py3-none-any.whl) (MD5: 8d4fae4e23e9198ea770b718404ef7e6)
-    - Flink 1.10：[Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink_flink_1.10-1.5.4-py3-none-any.whl) (MD5: c24a14496b873ea4c8048bbd83061c1f)
-    - Flink 1.9: [Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink_flink_1.9-1.5.4-py3-none-any.whl) (MD5: 878bc39a15eb22e4c67eb21d8bf9a337)
+    - Flink 1.13：[Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink-1.5.5-py3-none-any.whl) (MD5: 4d6ebc65eadebf68835c9834d30f2e17)
+    - Flink 1.12：[Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink_flink_1.12-1.5.5-py3-none-any.whl) (MD5: b7ab1a4d99837af70fd0902b86b5806f)
+    - Flink 1.11：[Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink_flink_1.11-1.5.5-py3-none-any.whl) (MD5: 2ff6b9836be67be484e8a7fe961d7307)
+    - Flink 1.10：[Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink_flink_1.10-1.5.5-py3-none-any.whl) (MD5: 8a26eef0a664b0bc1a6a70215c7c8f05)
+    - Flink 1.9: [Link](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink_flink_1.9-1.5.5-py3-none-any.whl) (MD5: a75ab7f0212cb1ae0886e7d38fc9e713)
 3. If multiple version of Python exist, you may need to use a special version of `pip`, like `pip3`;
 If Anaconda is used, the command should be run in Anaconda prompt. 
 
@@ -159,7 +159,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.13_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>
@@ -183,7 +183,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.12_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>
@@ -207,7 +207,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.11_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>
@@ -231,7 +231,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.10_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>
@@ -251,7 +251,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.9_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>

README.md

@@ -48,7 +48,7 @@
 
   - PyAlink 根据 Alink 所支持的 Flink 版本提供不同的 Python 包：
 其中，`pyalink` 包对应为 Alink 所支持的最新 Flink 版本，当前为 1.13，而 `pyalink-flink-***` 为旧版本的 Flink 版本，当前提供 `pyalink-flink-1.12`, `pyalink-flink-1.11`, `pyalink-flink-1.10` 和 `pyalink-flink-1.9`。
-  - Python 包的版本号与 Alink 的版本号一致，例如`1.5.4`。
+  - Python 包的版本号与 Alink 的版本号一致，例如`1.5.5`。
 
 ####安装步骤：
 1. 确保使用环境中有Python3，版本限于 3.6，3.7 和 3.8。
@@ -61,11 +61,11 @@
 1. `pyalink` 和 `pyalink-flink-***` 不能同时安装，也不能与旧版本同时安装。
 如果之前安装过 `pyalink` 或者 `pyalink-flink-***`，请使用`pip uninstall pyalink` 或者 `pip uninstall pyalink-flink-***` 卸载之前的版本。
 2. 出现`pip`安装缓慢或不成功的情况，可以参考[这篇文章](https://segmentfault.com/a/1190000006111096)修改pip源，或者直接使用下面的链接下载 whl 包，然后使用 `pip` 安装：
-   - Flink 1.13：[链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink-1.5.4-py3-none-any.whl) (MD5: a68fa2474bc52dc2181bc98787d3e2d3)
-   - Flink 1.12：[链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink_flink_1.12-1.5.4-py3-none-any.whl) (MD5: ed191adfd5bbaaacf979aa373a7a61f5)
-   - Flink 1.11：[链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink_flink_1.11-1.5.4-py3-none-any.whl) (MD5: 8d4fae4e23e9198ea770b718404ef7e6)
-   - Flink 1.10：[链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink_flink_1.10-1.5.4-py3-none-any.whl) (MD5: c24a14496b873ea4c8048bbd83061c1f)
-   - Flink 1.9: [链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.4/pyalink_flink_1.9-1.5.4-py3-none-any.whl) (MD5: 878bc39a15eb22e4c67eb21d8bf9a337)
+   - Flink 1.13：[链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink-1.5.5-py3-none-any.whl) (MD5: 4d6ebc65eadebf68835c9834d30f2e17)
+   - Flink 1.12：[链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink_flink_1.12-1.5.5-py3-none-any.whl) (MD5: b7ab1a4d99837af70fd0902b86b5806f)
+   - Flink 1.11：[链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink_flink_1.11-1.5.5-py3-none-any.whl) (MD5: 2ff6b9836be67be484e8a7fe961d7307)
+   - Flink 1.10：[链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink_flink_1.10-1.5.5-py3-none-any.whl) (MD5: 8a26eef0a664b0bc1a6a70215c7c8f05)
+   - Flink 1.9: [链接](https://alink-release.oss-cn-beijing.aliyuncs.com/v1.5.5/pyalink_flink_1.9-1.5.5-py3-none-any.whl) (MD5: a75ab7f0212cb1ae0886e7d38fc9e713)
 3. 如果有多个版本的 Python，可能需要使用特定版本的 `pip`，比如 `pip3`；如果使用 Anaconda，则需要在 Anaconda 命令行中进行安装。
 
 #### 下载安装文件系统或 Catalog 依赖 jar 包：
@@ -160,7 +160,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.13_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>
@@ -184,7 +184,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.12_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>
@@ -208,7 +208,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.11_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>
@@ -232,7 +232,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.10_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>
@@ -252,7 +252,7 @@ pipeline.fit(data).transform(data).print();
 <dependency>
     <groupId>com.alibaba.alink</groupId>
     <artifactId>alink_core_flink-1.9_2.11</artifactId>
-    <version>1.5.4</version>
+    <version>1.5.5</version>
 </dependency>
 <dependency>
     <groupId>org.apache.flink</groupId>