Small doc tweaks#3120

Merged

daviddesberg merged 5 commits intoAzure:keyvault_previewfrom

daviddesberg:feature/kv_preview_doc_updates

May 23, 2018

Commits on May 18, 2018

fix typos
David Desberg
committed

Commits on May 21, 2018

Merge remote-tracking branch 'upstream/keyvault_preview' into keyvault_preview
David Desberg
committed

Commits on May 22, 2018

3072 and 4096 are valid rsa key sizes
David Desberg
committed

Commits on May 23, 2018

add ecc descriptions
David Desberg
committed
Tweak ec descriptions
David Desberg
committed