Make Synapse log messages a bit prettier

ef5e4ad061 intentionally makes us conform to
the logging format suggested by the official Docker image.

Reverting this part, because it's uglier.

This likely should be fixed upstream as well though.

roles/matrix-synapse/templates/synapse/synapse.log.config.j2

@@ -4,7 +4,7 @@ version: 1
 
 formatters:
     precise:
-        format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s- %(message)s'
+        format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s - %(message)s'
 
 filters:
     context: