Fix some broken links in the docs (#8394)

* fix some broken links

* remove duplicate and confusing material from cli.md

* Switch brazil to the 2 letter country code

* Update docs/_langs.md

Co-Authored-By: Ryan <fauxpark@gmail.com>

Co-authored-by: Ryan <fauxpark@gmail.com>

docs/_summary.md

@@ -18,7 +18,6 @@
   * [Overview](newbs_building_firmware_configurator.md)
   * [Step by Step](configurator_step_by_step.md)
   * [Troubleshooting](configurator_troubleshooting.md)
-  * [Problems and Bugs](configurator_problems.md)
   * QMK API
     * [Overview](api_overview.md)
     * [API Documentation](api_docs.md)
@@ -128,7 +127,6 @@
   * Python Development
     * [Coding Conventions](coding_conventions_python.md)
     * [QMK CLI Development](cli_development.md)
-    * [QMK CLI Config](cli_dev_configuration.md)
 
   * Configurator Development
     * QMK API