Change InlineArray sugar separator `x` -> `of` #218

Job	Run time
Validate generated code	2m 50s
Run tests using swift-syntax-dev-utils (Windows)	48m 28s
Run tests using swift-syntax-dev-utils (Linux)	24m 9s
Test / Linux (5.9 - jammy)	3m 55s
Test / macOS (Xcode ${{ matrix.xcode_version }} - ${{ matrix.os_version }} - ${{ matrix.arch }})	0s
Test / Linux (5.10 - jammy)	3m 50s
Test / Windows (5.9 - windows-2022)	25m 23s
Test / Linux (6.0 - jammy)	4m 4s
Test / Windows (6.0 - windows-2022)	15m 53s
Test / Linux (6.1 - jammy)	4m 13s
Test / Windows (6.1 - windows-2022)	17m 14s
Test / Linux (nightly-main - jammy)	4m 45s
Test / Windows (nightly - windows-2019)	16m 4s
Test / Linux (nightly-6.1 - jammy)	4m 35s
Test / Windows (nightly-6.1 - windows-2019)	14m 49s
Test / Linux (nightly-6.2 - jammy)	4m 46s
Soundness / API breakage check	0s
Soundness / Broken symlinks check	4s
Soundness / Documentation check	4m 27s
Soundness / Format check	38s
Soundness / License headers check	10s
Soundness / Python lint check	6s
Soundness / Shell check	31s
Soundness / Unacceptable language check	4s
Soundness / YAML lint check	5s
	3h 21m 3s

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