typo

roles/discourse/tasks/main.yml

@@ -132,7 +132,7 @@
   register: db_shared_buffers
 
 - debug:
-    msg: "db_shared_buffers to be set {{ db_shared_buffers.stdout }}MB, to which is 25% of physical memory"
+    msg: "db_shared_buffers to be set {{ db_shared_buffers.stdout }}MB, which is 25% of physical memory"
 
 - name: Count the CPUs
   command: nproc --all