fix: replace another 'addon-template' with 'redis'

also remove unnecessary comments

docker-compose.redis.yaml

@@ -1,4 +1,3 @@
-# Simple template to demonstrate addon-template
 version: '3.6'
 services:
   redis:

install.yaml

@@ -1,11 +1,9 @@
-name: addon-template
+name: redis
 
 # pre_install_actions - list of actions to run before installing the addon.
 # Examples would be removing an extraneous docker volume,
 # or doing a sanity check for requirements.
 pre_install_actions:
-# - 'if [ "$(arch)" = "arm64" -o "$(arch)" = "aarch64" ]; then echo "This package does not work on arm64 machines"; exit 1; fi'
-# - "docker volume rm ddev-${DDEV_PROJECT}_solr 2>/dev/null || true"
 
 # list of files and directories listed that are copied into project .ddev directory
 project_files:
@@ -15,8 +13,5 @@ project_files:
 
 # List of files and directories that are copied into the global .ddev directory
 global_files:
-# - commands
-# - homeadditions
 
 post_install_actions:
-# - perl -pi -e 's/oldstring/newstring/g' docker-compose.addon-template.yaml