small fix

Author: SmokyBob

Diff for: styles.html

@@ -54,7 +54,7 @@
 
   prettify-element {
     overflow: auto;
-    --prettify-code-pre: {
+    --prettify-pre: {
       font-family: Inconsolata;
       font-size: 20px;
       background-color:transparent;