Minor improvements per Tutorial Lesson 1 development. #955

Job	Run time
build-gem	16s
Use gem to package fontist windows-latest Ruby 3.2.6 CC gcc	23m 57s
Use gem to package metanorma macos-13 Ruby 3.2.6 CC clang	20m 43s
Use gem to package metanorma alpine:3.17 Ruby 3.2.6 CC gcc	21m 38s
Use gem to package metanorma ubuntu-20.04 Ruby 3.2.6 CC clang-12	15m 8s
Use gem to package fontist macos-13 Ruby 3.2.6 CC clang	18m 32s
Use gem to package fontist alpine:3.17 Ruby 3.2.6 CC gcc	20m 24s
Use gem to package fontist ubuntu-20.04 Ruby 3.2.6 CC clang-12	14m 27s
Use gem to package metanorma macos-14 Ruby 3.2.6 CC clang	11m 43s
Use gem to package fontist macos-14 Ruby 3.2.6 CC clang	8m 50s
cross-test on ${{ matrix.os }}	0s
Release gem	0s
	2h 35m 38s

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