Fix: format all the stuff

src/ops/shelltips.md

@@ -4,4 +4,4 @@
 
 ```shell
 find /proc -maxdepth 2 -type f -iname status -exec grep -HR VmSwap {} \; | grep -v " 0 kB"
-```
+```

src/ops/tools/ansible.md

@@ -63,4 +63,4 @@ false.
     dest: /etc/telegraf/telegraf.d/input.docker.conf
   notify: reload telegraf
   when: "'docker' in services"
-```
+```

src/ops/tools/docker.md

@@ -6,4 +6,4 @@
 
 ```shell
 docker container inspect --format='{{range .NetworkSettings.Networks }}{{ .IPAddress }}{{ end }}' upbeat_babbage
-```
+```

src/ops/tools/mongodb.md

@@ -13,4 +13,3 @@ Reality says
 ```shell
 mongo --username user --password='passwd'
 ```
-