Update README.md

Author: octopusengine

README.md

@@ -3,9 +3,9 @@ simple solar regulator - Micropython project
 
 v0.21 (2020)
 
-<code>
+<pre>
 from config import Config
 conf = Config("solar2")
 conf.set("influx_url","your.influx.net")
 conf.save()
-</code>
+</pre>