Update modules/manage/partials/monitor-health.adoc

Co-authored-by: Joyce Fee <102751339+Feediver1@users.noreply.github.com>

Author: paulohtb6

modules/manage/partials/monitor-health.adoc

@@ -71,7 +71,7 @@ To monitor memory pressure (fraction of memory being used), which may be more in
 min(redpanda_memory_available_memory / redpanda_memory_allocated_memory)
 ----
 
-You can also monitor the lowest available memory since process start to understand historical memory pressure:
+You can also monitor the lowest available memory available since the process started to understand historical memory pressure:
 
 [,promql]
 ----