Update docs/codeql/codeql-cli/getting-started-with-the-codeql-cli.rst

Co-authored-by: Felicity Chapman <felicitymay@github.com>

Author: aeisenberg

docs/codeql/codeql-cli/getting-started-with-the-codeql-cli.rst

@@ -240,7 +240,7 @@ see ":doc:`About QL packs <about-ql-packs>`."
      in the LGTM admin help.
 
 4. Extract the zip archive
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+~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 For Linux, Windows, and macOS users (version 10.14 "Mojave", and earlier)
 simply