[DOC] Strip trailing spaces #314

Job	Run time
ruby-versions / Generate Ruby versions	2s
test (2.5, ubuntu-latest)	54s
test (2.5, macos-latest)	3m 13s
test (2.5, windows-latest)	6m 41s
test (2.6, ubuntu-latest)	44s
test (2.6, macos-latest)	2m 24s
test (2.6, windows-latest)	3m 4s
test (2.7, ubuntu-latest)	50s
test (2.7, macos-latest)	1m 12s
test (2.7, windows-latest)	2m 54s
test (3.0, ubuntu-latest)	26s
test (3.0, macos-latest)	2m 33s
test (3.0, windows-latest)	2m 31s
test (3.1, ubuntu-latest)	27s
test (3.1, macos-latest)	58s
test (3.1, windows-latest)	1m 59s
test (3.2, ubuntu-latest)	23s
test (3.2, macos-latest)	56s
test (3.2, windows-latest)	2m 25s
test (head, ubuntu-latest)	24s
test (head, macos-latest)	58s
test (head, windows-latest)	2m 51s
test (jruby, ubuntu-latest)	6m 11s
test (jruby-head, ubuntu-latest)	7m 31s
test (truffleruby, ubuntu-latest)	3m 56s
test (truffleruby-head, ubuntu-latest)	4m 5s
	1h 0m 32s

Provide feedback