DOCSP-43449 updated text for nLogs param (#666)

Author: kyuan-mongodb

source/command/atlas-performanceAdvisor-slowQueryLogs-list.txt

@@ -52,7 +52,7 @@ Options
    * - --nLog
      - int
      - false
-     - Maximum number of log lines to return. This value defaults to 20000.
+     - Maximum number of log lines to return, up to a maximum of 20000. This value defaults to 20000.
    * - --namespaces
      - strings
      - false