Bump markdown-to-jsx from 6.11.1 to 6.11.4 in /example

Bumps [markdown-to-jsx](https://github.com/probablyup/markdown-to-jsx) from 6.11.1 to 6.11.4.
- [Release notes](https://github.com/probablyup/markdown-to-jsx/releases)
- [Commits](quantizor/markdown-to-jsx@6.11.1...6.11.4)

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

Author: dependabot[bot]

example/yarn.lock

@@ -5281,9 +5281,9 @@ map-visit@^1.0.0:
     object-visit "^1.0.0"
 
 markdown-to-jsx@^6.9.1, markdown-to-jsx@^6.9.3:
-  version "6.11.1"
-  resolved "https://registry.yarnpkg.com/markdown-to-jsx/-/markdown-to-jsx-6.11.1.tgz#3931612cfffaa5fd6610ecf2a4055eccccb98fa8"
-  integrity sha512-FdtDAv8d9/tjyHxdCvWZxxOgK2icwzBkTq/dPk+XlQ2B+DYDcwE89FWGzT92erXQ0CQR/bQbpNK3loNYhYL70g==
+  version "6.11.4"
+  resolved "https://registry.yarnpkg.com/markdown-to-jsx/-/markdown-to-jsx-6.11.4.tgz#b4528b1ab668aef7fe61c1535c27e837819392c5"
+  integrity sha512-3lRCD5Sh+tfA52iGgfs/XZiw33f7fFX9Bn55aNnVNUd2GzLDkOWyKYYD8Yju2B1Vn+feiEdgJs8T6Tg0xNokPw==
   dependencies:
     prop-types "^15.6.2"
     unquote "^1.1.0"