Removing dot from end of SIM_SWAP.UNKNOWN_PHONE_NUMBER response message. This is to align with other response messages.

[trehman-gsma]

What type of PR is this?

Add one of the following kinds:

• correction

What this PR does / why we need it:

This is a tiny change! Removing only 1 character from the spec.

Have removed the dot at the end of the message for SIM_SWAP.UNKNOWN_PHONE_NUMBER.

i.e. "SIM Swap can't be checked because the phone number is unknown." has been changed to "SIM Swap can't be checked because the phone number is unknown" (notice that the dot is removed at the end of the message).

This is simply to align the SIM_SWAP.UNKNOWN_PHONE_NUMBER message with the other non-200 response messages. They all lack the dot at the end of the message. For example, "Client does not have sufficient permissions to perform this action"

Which issue(s) this PR fixes:

I did not create an issue for this - it seemed too small to raise an issue for. I can raise one if required.

Special notes for reviewers:

I was reviewing the existing spec in context of GSMA certification/testing and noticed the discrepancy.

Changelog input

 release-note

The message value in the 404 SIM_SWAP.UNKNOWN_PHONE_NUMBER response has been slightly amended to remove a trailing dot/period. This is to align with the other non-200 response messages (they do not have trailing dot/periods). 

Additional documentation

N/A

[fernandopradocabrillo]

LGTM