Documentation: Replace Cache with Caché

Run the command

 sed -i 's/\<Cache\>/Caché/g' Documentation/*.rst

and manually revert changes in literal blocks.

Suggested-by: Christopher Edwards <Christopher.Edwards@krminc.com>
Change-Id: I00aed5f3833258bf32ab3061b09d12e0c4f42790
Merge "Documentation: Replace Cache with Caché"