docs: add dynamic ram assignment docs (#4939)

* fix: add dynamic ram assignment

* reaplced 1/4th with one quarter

* fix: added mention of -xmx and -xms for end user

docs/getting-started/install-kura.md

@@ -34,6 +34,9 @@ kura-<kura-version>_generic-<arch>_installer.deb/rpm
 
 where `<arch>` is one of the **supported architectures**: *x86_64*, *arm32*, and *arm64*. A generic Kura profile can work on systems that have available the dependencies listed in the [Kura dependencies](#kura-dependencies) section, and that have **at least one** physical ethernet interface.
 
+### Java Heap Memory Assignment
+Eclipse Kura's Generic profile incorporates an adaptive Heap Memory allocation system during installation. The allocation follows a formula based on your gateway's available memory. If your gateway has less than 1024MB of RAM, Kura will set -Xms and -Xmx to 256MB. For gateways with more than 1024MB, one quarter of the total RAM will be assigned to -Xms and -Xmx.
+
 ### Initial network configuration
 
 During the installation of a generic profile with network management support, the initial network configuration will be generated dynamically using the rules described below: