chore: fix typos in Dash-specific comments #172

Job	Run time
Build Image	23s
Build Dependencies (arm-linux, arm-linux-gnueabihf)	1m 4s
Build Dependencies (linux64, x86_64-pc-linux-gnu)	1m 4s
Build (arm-linux, arm-linux-gnueabihf, arm-linux)	5m 42s
Build (linux64, x86_64-pc-linux-gnu, linux64)	18m 42s
Build (linux64_cxx20, x86_64-pc-linux-gnu, linux64)	8m 43s
Build (linux64_fuzz, x86_64-pc-linux-gnu, linux64)	14m 1s
Build (linux64_nowallet, x86_64-pc-linux-gnu, linux64)	8m 51s
Build (linux64_sqlite, x86_64-pc-linux-gnu, linux64)	8m 39s
Build (linux64_tsan, x86_64-pc-linux-gnu, linux64)	12m 58s
Build (linux64_ubsan, x86_64-pc-linux-gnu, linux64)	8m 55s
	1h 29m 2s

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