修复公式解析的 Bug

web/package-lock.json

@@ -23,6 +23,7 @@
         "lodash": "^4.17.21",
         "markdown-it": "^13.0.1",
         "markdown-it-emoji": "^2.0.0",
+        "markdown-it-katex": "^2.0.3",
         "markdown-it-mathjax3": "^4.3.2",
         "markmap-common": "^0.16.0",
         "markmap-lib": "^0.16.1",
@@ -8654,6 +8655,25 @@
       "resolved": "https://registry.npmmirror.com/markdown-it-emoji/-/markdown-it-emoji-2.0.2.tgz",
       "integrity": "sha512-zLftSaNrKuYl0kR5zm4gxXjHaOI3FAOEaloKmRA5hijmJZvSjmxcokOLlzycb/HXlUFWzXqpIEoyEMCE4i9MvQ=="
     },
+    "node_modules/markdown-it-katex": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmmirror.com/markdown-it-katex/-/markdown-it-katex-2.0.3.tgz",
+      "integrity": "sha512-nUkkMtRWeg7OpdflamflE/Ho/pWl64Lk9wNBKOmaj33XkQdumhXAIYhI0WO03GeiycPCsxbmX536V5NEXpC3Ng==",
+      "dependencies": {
+        "katex": "^0.6.0"
+      }
+    },
+    "node_modules/markdown-it-katex/node_modules/katex": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmmirror.com/katex/-/katex-0.6.0.tgz",
+      "integrity": "sha512-rS4mY3SvHYg5LtQV6RBcK0if7ur6plyEukAOV+jGGPqFImuzu8fHL6M752iBmRGoUyF0bhZbAPoezehn7xYksA==",
+      "dependencies": {
+        "match-at": "^0.1.0"
+      },
+      "bin": {
+        "katex": "cli.js"
+      }
+    },
     "node_modules/markdown-it-mathjax3": {
       "version": "4.3.2",
       "resolved": "https://registry.npmjs.org/markdown-it-mathjax3/-/markdown-it-mathjax3-4.3.2.tgz",
@@ -8895,6 +8915,11 @@
         "markmap-common": "*"
       }
     },
+    "node_modules/match-at": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmmirror.com/match-at/-/match-at-0.1.1.tgz",
+      "integrity": "sha512-h4Yd392z9mST+dzc+yjuybOGFNOZjmXIPKWjxBd1Bb23r4SmDOsk2NYCU2BMUBGbSpZqwVsZYNq26QS3xfaT3Q=="
+    },
     "node_modules/mathjax-full": {
       "version": "3.2.2",
       "resolved": "https://registry.npmjs.org/mathjax-full/-/mathjax-full-3.2.2.tgz",