docs(contributing): typo fix (#1638)

CONTRIBUTING.md

@@ -107,11 +107,11 @@ To ensure consistency and quality, all documentation modifications must:
   - a third-party product/brand/service, i.e. Integrate with [GitHub](https://github.com)
   - an external concept or feature, i.e. Create a [GitHub release](https://help.github.com/articles/creating-releases)
   - a package or module, i.e. The [`@semantic-release/github`](https://github.com/semantic-release/github) module
-- Use the the [single backtick `code` quoting](https://help.github.com/articles/basic-writing-and-formatting-syntax/#quoting-code) for:
+- Use the [single backtick `code` quoting](https://help.github.com/articles/basic-writing-and-formatting-syntax/#quoting-code) for:
   - commands inside sentences, i.e. the `semantic-release` command
   - programming language keywords, i.e. `function`, `async`, `String`
   - packages or modules, i.e. The [`@semantic-release/github`](https://github.com/semantic-release/github) module
-- Use the the [triple backtick `code` formatting](https://help.github.com/articles/creating-and-highlighting-code-blocks) for:
+- Use the [triple backtick `code` formatting](https://help.github.com/articles/creating-and-highlighting-code-blocks) for:
   - code examples
   - configuration examples
   - sequence of command lines