Add SwaTex to Math category (#1975)

Author: Eversight

contents.json

@@ -5908,6 +5908,12 @@
       "description":"Arbitrary-precision arithmetic.",
       "homepage":"https://github.com/attaswift/BigInt"
     },
+    {
+      "title":"SwaTex",
+      "category":"math",
+      "description":"KaTeX-compatible LaTeX math rendering engine with no JavaScript, WebView, or DOM.",
+      "homepage":"https://github.com/PhraseHQ/SwaTex"
+    },
     {
       "title":"KALoader",
       "category":"ui",