chore(deps): bump @docusaurus/preset-classic (#1969)

Author: dependabot[bot]

website/package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "@docusaurus/core": "2.0.0-alpha.62",
-    "@docusaurus/preset-classic": "2.0.0-alpha.61",
+    "@docusaurus/preset-classic": "2.0.0-alpha.62",
     "classnames": "2.2.6",
     "react": "16.13.1",
     "react-dom": "16.13.1"