build(deps): bump gatsby-plugin-mdx from 1.10.0 to 1.10.1 in /docs

Bumps [gatsby-plugin-mdx](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-mdx) from 1.10.0 to 1.10.1.
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/gatsby-plugin-mdx@1.10.1/packages/gatsby-plugin-mdx/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-mdx@1.10.1/packages/gatsby-plugin-mdx)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

docs/package-lock.json

@@ -18,7 +18,7 @@
     "gatsby-plugin-emotion": "^4.3.10",
     "gatsby-plugin-google-analytics": "^2.11.0",
     "gatsby-plugin-manifest": "^2.12.0",
-    "gatsby-plugin-mdx": "^1.10.0",
+    "gatsby-plugin-mdx": "^1.10.1",
     "gatsby-plugin-netlify": "^2.11.0",
     "gatsby-plugin-netlify-cache": "^1.2.0",
     "gatsby-plugin-offline": "^3.10.0",