Update docs/configuring-playbook-synapse: remove the duplicated anchor link

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

docs/configuring-playbook-synapse.md

@@ -180,7 +180,7 @@ As with all other services, you can find the logs in [systemd-journald](https://
 
 ### Increase logging verbosity
 
-Because the [Synapse](https://github.com/element-hq/synapse) Matrix server is originally very chatty when it comes to logging, we intentionally reduce its [logging level](https://docs.python.org/3/library/logging.html#logging-levels) from `INFO` to `WARNING`.
+Because Synapse is originally very chatty when it comes to logging, we intentionally reduce its [logging level](https://docs.python.org/3/library/logging.html#logging-levels) from `INFO` to `WARNING`.
 
 If you'd like to debug an issue or [report a Synapse bug](https://github.com/element-hq/synapse/issues/new/choose) to the developers, it'd be better if you temporarily increase the logging verbosity to `INFO`. To do so, add the following configuration to your `vars.yml` file and re-run the playbook: