Sync docs from Discourse (#590)

Co-authored-by: GitHub Actions <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

docs/how-to/h-async-clients.md

@@ -1,6 +1,6 @@
 # Clients for Async replication
 
-## Pre-requisits
+## Pre-requisites
 Make sure both `Rome` and `Lisbon` Clusters are deployed using the [Async Deployment manual](/t/14169)!
 
 ## Offer and consume DB endpoints

docs/how-to/h-async-failover.md

@@ -1,6 +1,6 @@
 # Switchover / Failover of Async replication
 
-## Pre-requisits
+## Pre-requisites
 
 Make sure both `Rome` and `Lisbon` Clusters are deployed using the [Async Deployment manual](/t/14169)!
 

docs/how-to/h-async-recovery.md

@@ -1,6 +1,6 @@
 # Recovery of Async replication
 
-## Pre-requisits
+## Pre-requisites
 Make sure both `Rome` and `Lisbon` Clusters are deployed using the [Async Deployment manual](/t/14169)!
 
 ## Recovery detached cluster

docs/how-to/h-async-removal.md

@@ -1,6 +1,6 @@
 # Removal of Async replication
 
-## Pre-requisits
+## Pre-requisites
 
 Make sure both `Rome` and `Lisbon` Clusters are deployed using the [Async Deployment manual](/t/14169)!
 

docs/how-to/h-enable-alert-rules.md

@@ -44,8 +44,8 @@ route:
 receivers:
 - name: placeholder
   pushover_configs:
-    - user_key: <relace_with_your_user_key>
-      token: <relace_with_your_token>
+    - user_key: <replace_with_your_user_key>
+      token: <replace_with_your_token>
       url: http://<relace_with_grafana_public_ip>/cos-grafana/alerting/list
       title: "{{ range .Alerts }}{{ .Labels.severity }} - {{ if .Labels.juju_unit }}{{ .Labels.juju_unit }}{{ else }}{{ .Labels.juju_application }}{{ end }} in model {{ .Labels.juju_model }}: {{ .Labels.alertname }} {{ end }}"
       message: "{{ range .Alerts }} Job: {{ .Labels.job }} Instance: {{ .Labels.instance }} {{ end }}"