Update release notes (#4528)

Author: Flanker32

CHANGELOG.md

@@ -55,7 +55,7 @@ All notable changes to "Azure Toolkit for IntelliJ IDEA" will be documented in t
 
 ## 3.40.0
 ### Added
-- Support IntelliJ 2020.2 EAP
+- Support IntelliJ 2020.2
 
 ### Changed
 - Show non-anonymous HTTP trigger urls after function deployment

PluginsAndFeatures/azure-toolkit-for-intellij/resources/META-INF/plugin.xml

@@ -27,7 +27,7 @@
     <h3>3.40.0</h3>
     <h4>Added</h4>
     <ul>
-        <li>Support IntelliJ 2020.2 EAP</li>
+        <li>Support IntelliJ 2020.2</li>
     </ul>
     <h4>Changed</h4>
     <ul>

PluginsAndFeatures/azure-toolkit-for-intellij/resources/whatsnew/whatsnew.md

@@ -4,7 +4,7 @@
 ## 3.40.0
 
 ### Added
-- Support IntelliJ 2020.2 EAP
+- Support IntelliJ 2020.2
 
 ### Changed
 - Show non-anonymous HTTP trigger urls after function deployment