build(deps): bump nokogiri from 1.10.9 to 1.10.10 in /docs/v3

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.10.9 to 1.10.10.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/master/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.10.9...v1.10.10)

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

Author: dependabot[bot]

docs/v3/Gemfile.lock

@@ -100,7 +100,7 @@ GEM
       libv8 (> 7.3)
     minitest (5.14.0)
     multi_json (1.14.1)
-    nokogiri (1.10.9)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     padrino-helpers (0.12.9)
       i18n (~> 0.6, >= 0.6.7)