upgrade katex to 0.12, wiki load

ui/package.json

@@ -75,7 +75,7 @@
     "jquery-scroll-lock": "^3.1.3",
     "jquery.easing": "^1.4.1",
     "jquery.transit": "^0.9.12",
-    "katex": "^0.11.1",
+    "katex": "^0.12.0",
     "lodash": "^4.17.19",
     "mini-css-extract-plugin": "^0.9.0",
     "moment": "^2.27.0",