Mentions mash-playbook on feature_request.md and faq.md

Make one of the list items compact for the new item about mash-playbook

Signed-off-by: Suguru Hirahara <[email protected]>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -11,7 +11,7 @@ assignees: ''
 A clear and concise description of what the bug is.
 
 <!--
-NOTE: This Ansible playbook installs tens of separate services. If you're having a problem with a specific service, it is likely that the problem is not with our deployment method, but with the service itself. You may wish to report that problem at the source, upstream, and not to us
+NOTE: This Ansible playbook installs tens of separate services. If you're having a problem with a specific one, it is likely that the problem is with the service itself. You may wish to report that problem at the source, upstream.
 -->
 
 **To Reproduce**

.github/ISSUE_TEMPLATE/feature_request.md

@@ -13,7 +13,9 @@ A clear and concise description of what the problem is. Ex. I'm always frustrate
 <!--
 NOTE: When submitting feature requests, be aware that:
 
-- This Ansible playbook installs tens of separate services. If you're having a problem with a specific service or you'd like some functionality added to it, it is likely that the problem is not with our deployment method, but with the service itself. You may wish to report that problem at the source, upstream, and not to us.
+- This Ansible playbook installs tens of separate services. If you're having a problem with a specific one, it is likely that the problem is with the service itself. You may wish to report that problem at the source, upstream.
+
+- This playbook intends to focus solely on Matrix and Matrix-related services. If your request is not specific to them, you may as well to consider to submit it to the mash-playbook project: https://github.com/mother-of-all-self-hosting/mash-playbook
 
 - This is a community project with no financial backing. The easiest way to get a feature into this project is to just develop it yourself.
 -->

docs/faq.md

@@ -484,3 +484,11 @@ SSL certificates are managed automatically by the [Traefik](https://doc.traefik.
 If you're having trouble with SSL certificate renewal, check the Traefik logs (`journalctl -fu matrix-traefik`).
 
 If you're [using your own webserver](configuring-playbook-own-webserver.md) instead of the integrated one (Traefik), you should investigate in another way.
+
+## Miscellaneous
+
+### I would like to see this favorite service of mine integrated and become available on my Matrix server. How can I request it?
+
+You can freely create an issue for feature request on the repository at GitHub [here](https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/new). Note this is a community project with no financial backing, and there is not assurance that your request would be eventually picked up by others and the requested feature would become available. The easiest way to get a feature into this project is to just develop it yourself.
+
+Also, please note that this playbook intends to focus solely on Matrix and Matrix-related services. If your request is not specific to Matrix, you may as well to consider to submit it to the [mash-playbook](https://github.com/mother-of-all-self-hosting/mash-playbook), maintained by the members behind this matrix-docker-ansible-deploy project. [This document on the interoperability](https://github.com/mother-of-all-self-hosting/mash-playbook/blob/main/docs/interoperability.md) describes how to deploy services along with the Matrix services easily.