update ubuntu flavor variable

app/_src/gateway/install/linux/ubuntu.md

@@ -87,7 +87,7 @@ Once {{ site.base_gateway }} is running, you may want to do the following:
 You can install {{site.base_gateway}} by downloading an installation package or using the APT repository.
 
 {% if_version gte:3.4.x %}
-We currently package {{ site.base_gateway }} for Ubuntu Focal and Jammy. If you are using a different release, replace `jammy` with `$(lsb_release -sc)` or the release name in the commands below. To check your release name, run `lsb_release -sc`.
+We currently package {{ site.base_gateway }} for Ubuntu Focal and Jammy. To check your release name, run `lsb_release -sc`.
 {% endif_version %}
 {% if_version lte:3.3.x %}
 We currently package {{ site.base_gateway }} for Ubuntu Bionic, Focal, and Jammy. If you are using a different release, replace `jammy` with `$(lsb_release -sc)` or the release name in the commands below. To check your release name, run `lsb_release -sc`.
@@ -103,7 +103,7 @@ Install {{site.base_gateway}} on Ubuntu from the command line.
 
 1. Download the Kong package:
 
-{% assign ubuntu_flavor = "jammy" %}
+{% assign ubuntu_flavor = "$(lsb_release -sc)" %}
 {% if page.release == "3.0.x" %}
 {% assign ubuntu_flavor = "bionic" %}
 {% endif %}