Add descriptions to pages

content/peertube.md

@@ -1,6 +1,11 @@
 +++
 title = "PeerTube"
 menu = "main"
+
+description = """
+PeerTube is a free and decentralized video platform meant as an alternative to
+services like YouTube. See the instance running on https://peertube.boba.best
+"""
 +++
 
 ## What is PeerTube?

content/pleroma.md

@@ -1,6 +1,11 @@
 +++
 title = "Pleroma"
 menu = "main"
+
+description = """
+Pleroma is a decentralized and federated microblogging service (similar to
+Twitter). See the instance running on https://pleroma.boba.best
+"""
 +++
 
 ## What is Pleroma?