Suggest running start tag after janitor and Postgres vacuum

We do restart Synapse explicitly, but some other services
(bridges, matrix-corporal, ..) may not restart sometimes.

It's best to restart all services explicitly.

docs/maintenance-postgres.md

@@ -27,7 +27,7 @@ To perform a `FULL` Postgres [VACUUM](https://www.postgresql.org/docs/current/sq
 Example:
 
 ```bash
-ansible-playbook -i inventory/hosts setup.yml --tags=run-postgres-vacuum
+ansible-playbook -i inventory/hosts setup.yml --tags=run-postgres-vacuum,start
 ```
 
 **Note**: this will automatically stop Synapse temporarily and restart it later. You'll also need plenty of available disk space in your Postgres data directory (usually `/matrix/postgres/data`).

docs/maintenance-synapse.md

@@ -21,7 +21,7 @@ There are external tools (like [synapse-janitor](https://github.com/xwiki-labs/s
 To ask the playbook to run synapse-janitor, execute:
 
 ```bash
-ansible-playbook -i inventory/hosts setup.yml --tags=run-postgres-synapse-janitor
+ansible-playbook -i inventory/hosts setup.yml --tags=run-postgres-synapse-janitor,start
 ```
 
 **Note**: this will automatically stop Synapse temporarily and restart it later.
@@ -35,7 +35,7 @@ However, disk space only ever gets released after a [`FULL` Postgres `VACUUM`](.
 It's easiest if you ask the playbook to run both synapse-janitor and a `VACUUM FULL` in one call:
 
 ```bash
-ansible-playbook -i inventory/hosts setup.yml --tags=run-postgres-synapse-janitor,run-postgres-vacuum
+ansible-playbook -i inventory/hosts setup.yml --tags=run-postgres-synapse-janitor,run-postgres-vacuum,start
 ```
 
 **Note**: this will automatically stop Synapse temporarily and restart it later. You'll also need plenty of available disk space in your Postgres data directory (usually `/matrix/postgres/data`).