Change of wording for release threads

[Chris D]

@Mike

Currently the wording in XenForo release threads where templates have updated is:

The following changes provide functional improvements and fixes or cosmetic enhancements. We recommend that all users integrate these changes into their own templates if they have previously customized them by using the 'revert' controls. If you have not customized these templates, the changes will be automatically integrated when you upgrade to 1.2.1:

I feel this message is, excuse the pun, outdated as for the most part, reverting templates should be unnecessary thanks to the ability to compare and merge templates.