Add release note for 2.1.2 (#279)

* Add release note for 2.1.2

src/pages/download/release-note/2.1.1.md

@@ -11,7 +11,7 @@ Apache StreamPark (incubating) 2.1.1 is a bug fix version, which fixes some majo
 ---
 
 - Fixed the bug that the job cannot be started under Flink 1.14 (#2749)
-- Fixed the bug of IDAP login error (#2775)
+- Fixed the bug of LDAP login error (#2775)
 - Fixed the bug that the Application type was displayed incorrectly (#2778)
 - Fixed the bug of ingress version number parsing (#2749)
 - Fixed the bug that the status of the ResourceManager could not be obtained normally after the master-slave switch occurred (#2749)

src/pages/download/release-note/2.1.2.md

@@ -0,0 +1,29 @@
+
+## Release Notes 2.1.2
+
+<div style={{height: '30px'}}></div>
+
+Apache StreamPark (incubating) 2.1.2 is a bug fix version, which fixes some major bugs affecting the production environment and add some features.
+
+<div style={{height: '30px'}}></div>
+
+### Features
+----
+
+- Support Flink 1.18 (#3279)
+- Support huawei Flink (#2832)
+
+### Bugfix
+---
+
+- Fixed job state mapping bug (#2822)
+- Fixed duplicated task submit (#3028)
+- Fixed alert information cannot be sent in cancelling state (#3236)
+- Fixed deploy bug in k8s model (#3021)
+
+### Improvements
+---
+
+- Improve kerberos config (#2833)
+- Improve custom-code job support dependencies (#3291)
+