Fix typo in tutorial rotate-log-files

Author: cbentes

source/includes/steps-log-rotate-rename.yaml

@@ -6,8 +6,8 @@ action:
   code: |
     mongod -v --logpath /var/log/mongodb/server1.log
 post: |
-  You can also explicitly specify :option:`logRotate --rename
-  <mongod --logRotate>`.
+  You can also explicitly specify :option:`--logRotate rename
+  <--logRotate>`.
 ---
 stepnum: 2
 title: List the log files