grammar fixes (#2695)

“such as” should be used instead of “like” under imports->preface.

Reworded imports->preface and recovery_instructions for better flow.

config/locales/en.yml

@@ -248,7 +248,7 @@ en:
       one: Something isn't quite right yet! Please review the error below
       other: Something isn't quite right yet! Please review %{count} errors below
   imports:
-    preface: You can import certain data like all the people you are following or blocking into your account on this instance, from files created by an export on another instance.
+    preface: You can import data that you have exported from another instance, such as a list of the people you are following or blocking.
     success: Your data was successfully uploaded and will now be processed in due time
     types:
       blocking: Blocking list
@@ -333,7 +333,7 @@ en:
     lost_recovery_codes: Recovery codes allow you to regain access to your account if you lose your phone. If you've lost your recovery codes, you can regenerate them here. Your old recovery codes will be invalidated.
     manual_instructions: 'If you can''t scan the QR code and need to enter it manually, here is the plain-text secret:'
     recovery_codes_regenerated: Recovery codes successfully regenerated
-    recovery_instructions: If you ever lose access to your phone, you can use one of the recovery codes below to regain access to your account. Keep the recovery codes safe, for example by printing them and storing them with other important documents.
+    recovery_instructions: If you ever lose access to your phone, you can use one of the recovery codes below to regain access to your account. Keep the recovery codes safe. (For example, you may print them and store them with other important documents.)
     setup: Set up
     wrong_code: The entered code was invalid! Are server time and device time correct?
   users: