Merge pull request #1161 from herwinw/spelling #1637

Job	Run time
RuboCop	27s
specs (ubuntu, 3.0.6)	1m 32s
specs (ubuntu, 3.1.4)	1m 30s
specs (ubuntu, 3.2.2)	1m 22s
specs (ubuntu, 3.3.0)	1m 22s
specs (macos, 3.0.6)	1m 23s
specs (macos, 3.1.4)	1m 19s
specs (macos, 3.2.2)	1m 11s
specs (macos, 3.3.0)	2m 29s
specs (windows, 3.0.6)	3m 39s
specs (windows, 3.1.4)	4m 17s
specs (windows, 3.2.2)	4m 2s
specs (windows, 3.3.0)	4m 39s
specs (ubuntu, 3.3.0, --enable-frozen-string-literal)	1m 23s
	30m 35s

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