Add redirect for old getting started links (#8987)

docs/index.html

@@ -32,7 +32,7 @@
 
         // Moved pages
         '/adding_a_keyboard_to_qmk': '/hardware_keyboard_guidelines',
-        '/build_environment_setup': '/getting_started_build_tools',
+        '/build_environment_setup': '/newbs_getting_started',
         '/cli_dev_configuration': '/cli_configuration',
         '/dynamic_macros': '/feature_dynamic_macros',
         '/feature_common_shortcuts': '/feature_advanced_keycodes',
@@ -45,6 +45,7 @@
         '/tap_dance': '/feature_tap_dance',
         '/unicode': '/feature_unicode',
         '/python_development': '/cli_development',
+        '/getting_started_build_tools':'/newbs_getting_started',
       },
       basePath: '/',
       name: 'QMK Firmware',