Add missing space for syl in neume. Fixes #3863 #1637

Job	Run time
Copy the font files	4s
Set up and cache emscripten	9s
Build ubuntu-20.04-g++-10	5m 14s
Build ubuntu-22.04-g++-11	4m 55s
Build ubuntu-22.04-g++-12	5m 57s
Build ubuntu-20.04-clang-11	5m 41s
Build ubuntu-22.04-clang-12	6m 0s
Build ubuntu-22.04-clang-12	6m 2s
Build ubuntu-22.04-clang-12	6m 8s
Build ubuntu-22.04-clang-13	5m 54s
Build ubuntu-22.04-clang-14	5m 58s
Build ubuntu-22.04-clang-11	6m 0s
Build ubuntu-22.04-clang-15	6m 8s
Build macos-latest-xcode-15.4	3m 55s
Build macos-latest-g++-12	4m 32s
Build JS toolkit (nohumdrum, Building toolkit without humdrum, -c -H -M, verovio-toolkit.js*)	6m 35s
Build JS toolkit (light, Building toolkit without humdrum as light version, -c -H -l -M, verovio-...	6m 52s
Build JS toolkit (wasm, Building toolkit without humdrum as wasm, -c -H -w -M, veroviowasm, true)	5m 51s
Build JS toolkit (default, Building default toolkit with humdrum, -c -M, -hum.js)	9m 9s
Build documentation	29s
Check settings for deployment	1s
Deploy JS toolkit	59s
Deploy documentation	14s
Skip deployment if set	0s
	1h 42m 47s

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