Add known issues to AppCAT Java

Author: brunoborges

articles/migrate/appcat/java.md

@@ -73,6 +73,11 @@ The `appcat` CLI is available for download as a ZIP file from [aka.ms/appcat/azu
 
  - [Azure Migrate application and code assessment for Java 6.3.0.7](https://aka.ms/appcat/azure-migrate-appcat-for-java-cli-6.3.0.7-preview.zip)
 
+#### Known issues
+
+ - Certain rules may not be triggered when parsing specific Lambda expressions. See [issue](https://github.com/konveyor/rulesets/issues/102).
+ - Running `appcat` under non-unicode environment with complex double-byte characters will cause corruption. See [issue](https://github.com/Azure/appcat-rulesets/issues/183) for workarounds.
+
 ### Get started with appcat
 
 Unzip the zip file in a folder of your choice. You then get the following directory structure: