Update oaf.md: no longer active

projects/oaf.md

@@ -5,9 +5,9 @@ title: "OAF: An Open Archive for Formalizations"
 shorttitle: OAF
 teaser: The OAF Project builds a theoretical framework for interoperability of theorem prover libraries and implements an information system that host and align multiple libraries in a joint semantic setting.
 
-active: true
+active: false
 start_date: '2014'
-end_date: '2020'
+end_date: 'June 2020'
 publink: auto
 
 people: