website: Update documentation.yml to include new ARM files.

The new files on power modelling and adding DVFS support to ARM FS
simultations were not in the tabs on the website. This has now been

Change-Id: Ifba9cc55d7673949bef425d6cf8c526bfeb55862
Maintainer: Bobby R. Bruce <>
Tested-by: Bobby R. Bruce <>
Reviewed-by: Ciro Santilli <>
1 file changed