Documentation clarification

[saidelike]

As discussed on IRC, I personally found the naming of project/databases confusing at first. so I propose instead:

• Project: maybe using "File" is better? Dunno, but it corresponds to a unique file hash. Otherwise "Project" is fine
• Database: I think "Snapshot" is better, but is up to you.

Clarifying that any change that does not trigger an event in IDA will not be synced to others, hence why snapshots exist.

[saidelike]

This is done in https://github.com/fidgetingbits/IDArling/