correcting tutorial for Result.tryCreate (#266) #852

Job	Run time
build-devcontainer	8m 48s
dotnet-build (Debug, ubuntu-latest)	3m 30s
dotnet-build (Debug, windows-latest)	6m 30s
fable-python-build (ubuntu-latest, 3.10)	3m 1s
dotnet-build (Debug, macOS-latest)	3m 2s
fable-npm-build (ubuntu-latest, 18)	2m 11s
fable-python-build (ubuntu-latest, 3.11)	2m 38s
dotnet-build (Release, ubuntu-latest)	3m 13s
fable-npm-build (ubuntu-latest, 20)	2m 3s
fable-python-build (ubuntu-latest, 3.12)	2m 46s
dotnet-build (Release, windows-latest)	7m 26s
fable-python-build (windows-latest, 3.10)	5m 39s
fable-npm-build (ubuntu-latest, latest)	2m 9s
dotnet-build (Release, macOS-latest)	3m 7s
fable-python-build (windows-latest, 3.11)	4m 49s
fable-npm-build (windows-latest, 18)	5m 42s
fable-python-build (windows-latest, 3.12)	4m 54s
fable-npm-build (windows-latest, 20)	6m 6s
fable-python-build (macOS-latest, 3.10)	1m 56s
fable-npm-build (windows-latest, latest)	5m 34s
fable-python-build (macOS-latest, 3.11)	5m 24s
fable-npm-build (macOS-latest, 18)	1m 49s
fable-python-build (macOS-latest, 3.12)	3m 52s
fable-npm-build (macOS-latest, 20)	1m 49s
fable-npm-build (macOS-latest, latest)	2m 2s
	1h 40m 0s

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