Update API section in mkdocs.yml.

mkdocs.yml

@@ -53,6 +53,7 @@ nav:
                 - Generator: developer/api/core/api_reports_generator.md
                 - Layout items: developer/api/core/api_reports_layout_items.md
                 - Manager: developer/api/core/api_reports_manager.md
+                - Metrics: developer/api/core/api_reports_metrics.md
                 - Variables: developer/api/core/api_reports_variables.md
             - Validation:
                 - Configurations: developer/api/core/api_validation_configs.md
@@ -73,6 +74,8 @@ nav:
             - Implementation model widget: developer/api/gui/api_activity_widget.md
             - Items selection dialog: developer/api/gui/api_items_selection_dialog.md
             - Map repeat item widget: developer/api/gui/api_map_repeat_item_widget.md
+            - Metrics builder dialog: developer/api/gui/api_metrics_builder_dialog.md
+            - Metrics builder model: developer/api/gui/api_metrics_builder_model.md
             - Model component widget: developer/api/gui/api_model_component_widget.md
             - NCS Pathway editor: developer/api/gui/api_ncs_pathway_editor.md
             - Pixel Values editor: developer/api/gui/api_pixel_value_editor.md