Docs: Fix internal links and remove obsolete admonitions (#8946)

* Fixed a few more links

* Remove old syntax

* Abs-relative links to files in docs folder

* Trying to fix nother doc learn link

* Fix a few more links

* Add testing doc

* Tracking down mysteries

* Cleanup

* Update broken external links

* Remove index.html that appeared from testing

* Fix remainder of links

3 files changed, 8 insertions, 8 deletions

diff --git a/health/notifications/awssns/README.md b/health/notifications/awssns/README.md
index a2ff6deee6..0ec785bc60 100644
--- a/health/notifications/awssns/README.md
+++ b/health/notifications/awssns/README.md
@@ -20,7 +20,9 @@ To get this working, you will need:
 
 -   The Amazon Web Services CLI tools.  Most distributions provide these with the package name `awscli`.
 -   An actual home directory for the user you run Netdata as, instead of just using `/` as a home directory.  Setup of this is distribution specific.  `/var/lib/netdata` is the recommended directory (because the permissions will already be correct) if you are using a dedicated user (which is how most distributions work).
--   An Amazon SNS topic to send notifications to with one or more subscribers.  The [Getting Started](https://docs.aws.amazon.com/sns/latest/dg/GettingStarted.html) section of the Amazon SNS documentation covers the basics of how to set this up.  Make note of the Topic ARN when you create the topic.
+-   An Amazon SNS topic to send notifications to with one or more subscribers.  The [Getting
+    Started](https://docs.aws.amazon.com/sns/latest/dg/sns-getting-started.html) section of the Amazon SNS documentation
+    covers the basics of how to set this up.  Make note of the Topic ARN when you create the topic.
 -   While not mandatory, it is highly recommended to create a dedicated IAM user on your account for Netdata to send notifications.  This user needs to have programmatic access, and should only allow access to SNS.  If you're really paranoid, you can create one for each system or group of systems.
 
 Once you have all the above, run the following command as the user Netdata runs under:
diff --git a/health/notifications/dynatrace/README.md b/health/notifications/dynatrace/README.md
index 3532968f05..3f8ad85b6d 100644
--- a/health/notifications/dynatrace/README.md
+++ b/health/notifications/dynatrace/README.md
@@ -1,8 +1,6 @@
 <!--
----
 title: "Dynatrace"
 custom_edit_url: https://github.com/netdata/netdata/edit/master/health/notifications/dynatrace/README.md
----
 -->
 
 # Dynatrace
@@ -22,10 +20,10 @@ This is a required parameter.
 Generate a Dynatrace API authentication token. On your Dynatrace server, go to **Settings** --> **Integration** --> **Dynatrace API** --> **Generate token**.
 See [Dynatrace API - Authentication](https://www.dynatrace.com/support/help/extend-dynatrace/dynatrace-api/basics/dynatrace-api-authentication/) for more details.
 This is a required parameter.
-3.  API Space. This is the URL part of the page you have access in order to generate the API Token. For example, for my generated API Token the URL is:
-https://monitor.illumineit.com/e/2a93fe0e-4cd5-469a-9d0d-1a064235cfce/#settings/integration/apikeys;gf=all
-In that case, my space is _2a93fe0e-4cd5-469a-9d0d-1a064235cfce_
-This is a required parameter.
+3.  API Space. This is the URL part of the page you have access in order to generate the API Token. For example, the URL
+    for a generated API token might look like:
+    `https://monitor.illumineit.com/e/2a93fe0e-4cd5-469a-9d0d-1a064235cfce/#settings/integration/apikeys;gf=all` In that
+    case, my space is _2a93fe0e-4cd5-469a-9d0d-1a064235cfce_ This is a required parameter.
 4. Generate a Server Tag. On your Dynatrace Server, go to **Settings** --> **Tags** --> **Manually applied tags** and create the Tag.
 The Netdata alarm is sent as a Dynatrace Event to be correlated with all those hosts tagged with this Tag you have created.
 This is a required parameter.
diff --git a/health/notifications/kavenegar/README.md b/health/notifications/kavenegar/README.md
index e1e63fdfa4..4d43c450ee 100644
--- a/health/notifications/kavenegar/README.md
+++ b/health/notifications/kavenegar/README.md
@@ -7,7 +7,7 @@ custom_edit_url: https://github.com/netdata/netdata/edit/master/health/notificat
 
 # Kavenegar
 
-[Kavenegar](https://www.kavenegar.com/) as service for software developers, based in Iran, provides send and receive SMS, calling voice by using its APIs.
+[Kavenegar](https://kavenegar.com/) as service for software developers, based in Iran, provides send and receive SMS, calling voice by using its APIs.
 
 Will look like this on your Android device: