Update installing.md

docs/installing.md

@@ -1,6 +1,6 @@
 # Installing
 
-If you've [configured your DNS](configuring-dns.md) and have [configured the playbook](configuring-playook.md), you can start the installation procedure.
+If you've [configured your DNS](configuring-dns.md) and have [configured the playbook](configuring-playbook.md), you can start the installation procedure.
 
 Run this as-is to set up a server:
 
@@ -30,4 +30,4 @@ When you're ready to start the Matrix services (and set them up to auto-start in
 ansible-playbook -i inventory/hosts setup.yml --tags=start
 ```
 
-Now that the services are running, you might want to [create your first user account](registering-users.md)
+Now that the services are running, you might want to [create your first user account](registering-users.md)