fix typo in ch2.2

aztack · aztack · commit bbb63a2a0d4a · 2019-11-09T10:57:10.000+08:00
diff --git a/Chapter2.The-AWK-Language.md b/Chapter2.The-AWK-Language.md
@@ -65,7 +65,7 @@ Mark    5.00    20
 - continue
 - next
 - exit
-- exirt _expression_
+- exit _expression_
 
 ## Expressions
 ## Control-Flow Statements
