Change heading level of 'Original code'

In the case where we recommend trying the alternate code first, the
lower section is 'Original code' but this was at heading level 3 when
discussion suggests 2 so this was done as well:

    sgit -e 's/^### \(Original code\)/## \1/g' '*README.md'

1985/lycklama/README.md

@@ -56,7 +56,7 @@ which would set it at 700. Then, whether you use the default value or not, try:
 
 ```
 
-### Original code:
+## Original code:
 
 As explained above, because modern systems run this entry way too fast to fully
 appreciate what it does, we encourage you to first try the alternate version.