Fix EditorConfig lint errors

## EditorConfig Linting Failures Linting failures were detected in the automated EditorConfig lint workflow run. ### Workflow Details - Run: https://github.com/stdlib-js/stdlib/actions/runs/32539046466 - Type: EditorConfig Linting - Date: 2026-08-22 00:04:14 UTC ### Error Details ``` Linting files for basic formatting errors... lib/node_modules/@stdlib/plot/ctor/lib/props/x-rug-orient/orientations.json: 2-3: Wrong indent style found (tabs instead of spaces) 1 errors found make: *** [/home/runner/work/stdlib/stdlib/tools/make/lib/lint/editorconfig.mk:90: lint-editorconfig-files] Error 1 ``` ### Pull Request Instructions - Please use the following PR title format: "chore: fix EditorConfig lint errors (issue #)". - Reference this issue in the "Related Issues" section of the PR body as "resolves #".