I'm afraid that this isn't possible. (At least, not right now.)
A quick perusal of the Google Drive support forums shows other people also wanting to have more dynamic mailto: links in their Google Documents. (Surprisingly, this might be easier to do with Google Spreadsheets and the =hyperlink() function.)
Anyway, I did some experimentation.
A mailto: link with one Email address will work.
mailto:bigal@example.com
However, it has to be an email address. Using a name (so that Outlook will search for it in your address book) doesn't work.
I also tried a couple of other tricks to get multiple addresses in the link.
mailto:bigal@example.com?cc=littlejohn@example.com
That doesn't work. Nor did separating email addresses with commas instead of semi-colons, so that's not an issue.
So, it appears that in a Google Document you're limited to the very simplest mailto: link.
Assuming you're "locked in" to the Google eco-system, your options at this point are to either put email addresses into the document as plain text (so people can copy-paste directly to their email client compose window) or create an email alias for each group of people who should receive email messages from a document. (That last is certainly impractical for even small shops.)
With the new version of Google Drive there is an amazing tool that will really help you.
It's called Manage revisions... under the Menu More when you select a file.
I won't explain to you here how it works because there is a very useful blog post that does it.
In this way the link won't change and viewers can just download or preview the latest version.
This is the link: Replace Google Drive file with new version
Try this alternative instead.
There's a nice option that can be useful: it is the publishing that Google Drive offers.
It means that Drive will generate a link after publishing that can be automatically updated everytime you change your document. The published view is not editable by viewers.
You can stop publishing easily. The bad thing is that anyone who has the URL to your publication can view them no matter what visibility option you’ve chosen for the original one.
I've checked that you can only require viewers to sign in with their account if you're in the same company. I can't explain better but you can see the check box that appears when you publish it.
This is the support link for this option: Google publishing
Best Answer
People with commenting privileges can only suggest edits to documents, so give those who you would only allow suggesting changes the comment privilege on the document and those who approve the changes editing access to the document.
On the advanced page, it is possible to set the link access to comment.