Update update.json

Update update.json in preparation for a new release.

update.json

@@ -1,5 +1,9 @@
 {
-    "latest": "v2.1.0",
+    "latest": "v2.1.1",
+    "v2.1.1": {
+        "changelog": "`TBOsmiumLib` has updated!\n\nEnjoy more helper functions in custom commands and other minor optimizations.\n\nSee the new TBOL documentation here: https://github.com/AnonymousHacker1279/TitanBot/wiki/Custom-Commands#tbosmiumlib-documentation",
+        "versionTag": "release"
+    },
     "v2.1.0": {
         "changelog": "Custom commands!\n\nExpand TitanBot to fit your server with custom commands.\nAdditionally, some improvements and minor bugfixes have been included for other functions.",
         "versionTag": "release"