Minor stylistic follow-up to e0df3bd

Signed-off-by: Joachim Wiberg <[email protected]>

Author: troglobit

README.md

@@ -431,10 +431,15 @@ A Dockerfile is provided to simplify building and running `inadyn`.
     docker build -t inadyn:latest .
     docker run --rm -v "$PWD/inadyn.conf:/etc/inadyn.conf" inadyn:latest
 
-**How to update ip periodically using cronjob :**
-* Create your `inadyn.conf` file
-* Create folder for cache
-* Add the following line inside crontab `crontab -e`
+#### Periodic Update with Cron
+
+If you don't want to run In-a-dyn as a background daemon, you can set up
+a cronjob:
+
+  * Create your `inadyn.conf` file
+  * Create folder for cache
+  * Add the following line inside crontab `crontab -e`
+
 ```bash
 * * * * * docker run --rm -v "path/to/inadyn.conf:/etc/inadyn.conf" -v "path/to/cache:/var/cache/inadyn" troglobit/inadyn:latest -1 --cache-dir=/var/cache/inadyn > /dev/null 2>&1
 ```