diff --git a/docs/configuring-playbook-alertmanager-receiver.md b/docs/configuring-playbook-alertmanager-receiver.md
index f85facefe..3fd90643c 100644
--- a/docs/configuring-playbook-alertmanager-receiver.md
+++ b/docs/configuring-playbook-alertmanager-receiver.md
@@ -72,20 +72,20 @@ Then, you can proceed to [Usage](#usage).
 Configure your Prometheus Alertmanager with configuration like this:
 
 ```yml
-  receivers:
-    - name: matrix
-      webhook_configs:
-        - send_resolved: true
-          url: URL_HERE
-  route:
-    group_by:
-      - namespace
-    group_interval: 5m
-    group_wait: 30s
-    receiver: "matrix"
-    repeat_interval: 12h
-    routes:
-      - receiver: matrix
+receivers:
+  - name: matrix
+    webhook_configs:
+      - send_resolved: true
+        url: URL_HERE
+route:
+  group_by:
+    - namespace
+  group_interval: 5m
+  group_wait: 30s
+  receiver: "matrix"
+  repeat_interval: 12h
+  routes:
+    - receiver: matrix
 ```
 
 .. where `URL_HERE` looks like `https://matrix.DOMAIN/matrix-alertmanager-receiver-RANDOM_VALUE_HERE/alert/some-room-name` or `https://matrix.DOMAIN/matrix-alertmanager-receiver-RANDOM_VALUE_HERE/alert/!some-room-id:DOMAIN`.
diff --git a/roles/custom/matrix-alertmanager-receiver/defaults/main.yml b/roles/custom/matrix-alertmanager-receiver/defaults/main.yml
index d802c9c77..d88db1cb1 100644
--- a/roles/custom/matrix-alertmanager-receiver/defaults/main.yml
+++ b/roles/custom/matrix-alertmanager-receiver/defaults/main.yml
@@ -156,19 +156,19 @@ matrix_alertmanager_receiver_config_templating_generator_url_mapping: {}
 # Controls the `templating.computed-values` configuration setting.
 matrix_alertmanager_receiver_config_templating_computed_values: "{{ matrix_alertmanager_receiver_config_templating_computed_values_default + matrix_alertmanager_receiver_config_templating_computed_values_auto + matrix_alertmanager_receiver_config_templating_computed_values_custom }}"
 matrix_alertmanager_receiver_config_templating_computed_values_default:
-    - values: # always set 'color' to 'yellow'
-        color: yellow
-    - values: # set 'color' to 'orange' when alert label 'severity' is 'warning'
-        color: orange
-      when-matching-labels:
-        severity: warning
-    - values: # set 'color' to 'red' when alert label 'severity' is 'critical'
-        color: red
-      when-matching-labels:
-        severity: critical
-    - values: # set 'color' to 'green' when alert status is 'resolved'
-        color: green
-      when-matching-status: resolved
+  - values:  # always set 'color' to 'yellow'
+      color: yellow
+  - values:  # set 'color' to 'orange' when alert label 'severity' is 'warning'
+      color: orange
+    when-matching-labels:
+      severity: warning
+  - values:  # set 'color' to 'red' when alert label 'severity' is 'critical'
+      color: red
+    when-matching-labels:
+      severity: critical
+  - values:  # set 'color' to 'green' when alert status is 'resolved'
+      color: green
+    when-matching-status: resolved
 matrix_alertmanager_receiver_config_templating_computed_values_auto: []
 matrix_alertmanager_receiver_config_templating_computed_values_custom: []