PR template: Clarify compensation

[InfoTeddy]

Translators have been getting compensated for localization. Sometimes they submit pull requests for their changes, but just because they do doesn't mean that they won't get compensated.

The intent of this line was to make sure that any random contributor wouldn't expect any compensation for their changes, so adding another clause here still keeps that expectation while making it clear that it's not like @TerryCavanagh never compensates people. Even if, as a Swedish man once sung, "Terry is a monster, I think we all know that".

Legal Stuff:

By submitting this pull request, I confirm that...

• [x] My changes may be used in a future commercial release of VVVVVV
• [x] I will be credited in a CONTRIBUTORS file and the "GitHub Friends" section of the credits for all of said releases, but will NOT be compensated for these changes unless there is a prior written agreement

^^^ This is the updated line!

[flibitijibibo]

"... unless there is a prior written agreement" comes to mind, I guess it's implied but as with all agreements being more explicit always helps!

[TerryCavanagh]

"... unless there is a prior written agreement" comes to mind, I guess it's implied but as with all agreements being more explicit always helps!

yep, this is a good change!

[InfoTeddy]

Suggestion applied.

[TerryCavanagh]

Done, thanks!