chore: rename test samples (more unified) (#933)

rename samples from #933

demo/index.js

@@ -32,8 +32,8 @@ import * as svg2pdf from '../node_modules/svg2pdf.js/dist/svg2pdf.min';
             "OSMD Function Test - Auto-/Custom-Coloring": "OSMD_function_test_auto-custom-coloring-entchen.musicxml",
             "OSMD Function Test - Bar lines": "OSMD_function_test_bar_lines.musicxml",
             "OSMD Function Test - Chord Symbols": "OSMD_function_test_chord_symbols.musicxml",
-            "OSMD Function Test - Chord Spacing Test": "ChordSpacingTest.mxl",
-            "OSMD Function Test - Chord Symbols - Various Chord Tests": "VariousChordTests.musicxml",
+            "OSMD Function Test - Chord Spacing": "OSMD_function_test_chord_spacing.mxl",
+            "OSMD Function Test - Chord Symbols - Various Chords": "OSMD_function_test_chord_tests_various.musicxml",
             "OSMD Function Test - Chord Symbols - BrookeWestSample": "BrookeWestSample.mxl",
             "OSMD Function Test - Color (from XML)": "OSMD_function_test_color.musicxml",
             "OSMD Function Test - Container height (compacttight mode)": "OSMD_Function_Test_Container_height.musicxml",