update description for tilde.institute

... and remove reference to my old username

members.json

@@ -152,7 +152,7 @@
             ]
         },
         {
-            "description": "Providing a space in the tildeverse for users to learn about the OpenBSD operating system",
+            "description": "A public-access UNIX system running OpenBSD",
             "link": "https://tilde.institute",
             "gopher": "tilde.institute",
             "name": "tilde.institute",
@@ -161,7 +161,7 @@
             "os": "openbsd",
             "sysadmins": [
                 [
-                    "gbmor / ahriman",
+                    "gbmor",
                     "https://gbmor.dev"
                 ],
                 [
@@ -239,4 +239,4 @@
             ]
         }
     ]
-}
+}