Update viewing-history.asc

Author: nobozo

book/02-git-basics/sections/viewing-history.asc

@@ -273,7 +273,7 @@ In <<limit_options>> we'll list these and a few other common options for your re
 | `-S`                  | Only show commits adding or removing code matching the string
 |================================
 
-For example, if you want to see which commits modifying test files in the Git source code history were committed by Junio Hamano and were not merges in the month of October 2008, you can run something like this:(((log filtering)))
+For example, if you want to see which commits modifying test files in the Git source code history were committed by Junio Hamano and were not merged in the month of October 2008, you can run something like this:(((log filtering)))
 
 [source,console]
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