two minor header tweaks to term md

terms-of-service.md

-#Snowdrift.coop Terms of Service
+# Snowdrift.coop Terms of Service
 *Version 0.4* (see our [changelog](https://git.snowdrift.coop/sd/legal/blob/master/CHANGELOG.md) for history)
 
 ## Introduction
@@ -31,7 +31,7 @@ We've tried to make our terms as ethical and transparent as possible. To that en
 | [O. Changes to these Terms of Service](#o-changes-to-these-terms) | We may modify this agreement, but we will give you 30 days' notice of changes that affect your rights. |
 | [P. Miscellaneous](#p-miscellaneous) | Further details and legal boilerplate for terms like this. |
 
-### The Snowdrift.coop Terms of Service
+## The Snowdrift.coop Terms of Service
 
 Effective date: September 10, 2018