Adding all Xperia X, XA2 and 10 to Recovery Mode doc

[jovirkku]

Signed-off-by: Jorma Virkkunen jorma.virkkunen@jolla.com

[jovirkku]

I have added Xperia X, XA2 & 10 to the same Recovery Mode doc with Xperia 10 II & III. For this:

a) I have modified the phone preparation section:
Setting up the Recovery Mode on the phone

• Preparing Xperia 10 II or Xperia 10 III to the Recovery Mode
• Preparing Xperia X, Xperia XA2 or Xperia 10 to the Recovery Mode]
• Forcing the phone to the Recovery Mode

b) I have modified the "back to normal" section:
Reverting the phone back to the normal state

• Reverting Xperia 10 II or Xperia 10 III to the normal mode
• Reverting Xperia X, Xperia XA2 or Xperia 10 to the normal mode

c) Due to different chapter names, modified zillion cross-references inside the doc.

I have also tried to unify the language of the two documents in some places.

[jpwalden]

Very good update, now this article covers other Xperia devices as well.

[jovirkku]

Done.