Linux Mint (Ubuntu 20.04 derivat) has installation issues

## Description
On an Ubuntu derivative (Linux Mint), there is a installation issue when using the apt-get system.
The default couchdb.list entry is not correct for this environment. The actual procedure for this has to be followed in the following discussion:
https://github.com/apache/couchdb/discussions/4278

## Steps to Reproduce

Use the installation steps as mentioned in the official document on Linux Mint 20.04:
https://docs.couchdb.org/en/3.2.2-docs/install/unix.html#installation-using-the-apache-couchdb-convenience-binary-packages

The final sudo apt-get update and install commands fail as mentioned in the discussion.

## Expected Behaviour

The installation of apt-get pre-requisites should work unattended.

## Your Environment

{"couchdb":"Welcome","version":"3.2.2","git_sha":"d5b746b7c","uuid":"8ae51d46978f8e6d06b37183f0f85bca","features":["access-ready","partitioned","pluggable-storage-engines","reshard","scheduler"],"vendor":{"name":"The Apache Software Foundation"}}

* CouchDB version used: 3.2.2
* Browser name and version: Not applicable
* Operating system and version:
System: Host:....: 5.15.0-53-generic x86_64 bits: 64 Desktop: Cinnamon 5.2.7
Distro: Linux Mint 20.3 Una
Machine: Type: Laptop System: Acer product: Swift SF314-42 v: V1.11 serial:
Mobo: RO model: Kona_RN v: V1.11 serial: UEFI: Insyde v: 1.11 date: 09/30/2022
Battery: ID-1: BAT1 charge: 41.7 Wh condition: 41.7/53.0 Wh (79%)
CPU: Topology: 8-Core model: AMD Ryzen 7 4700U with Radeon Graphics bits: 64 type: MCP L2 cache: 4096 KiB
Speed: 1397 MHz min/max: 1400/2000 MHz Core speeds (MHz): 1: 1397 2: 1397 3: 1397 4: 1397 5: 1397 6: 1397 7: 1397
8: 1397

## Additional Context

The main drag of the conversation is again in the discussion:
https://github.com/apache/couchdb/discussions/4278

Read the Linux installation instructions and the linked discussion first, focusing on the default couchdb.list entry and the failing apt-get update and install commands. Reproduce the procedure on Linux Mint 20.04, then verify that the prerequisites and CouchDB installation complete unattended.

Written by the indexing model from the issue text.