fix typo in title

AlbertoMontalesi · AlbertoMontalesi · commit 33fc6a922b67 · 2018-04-25T19:45:48.000+07:00
diff --git a/ebook/05_additional_string_methods.md b/ebook/05_additional_string_methods.md
@@ -1,4 +1,4 @@
-# Chatpter 5: Additional string methods
+# Chapter 5: Additional string methods
 
 We are going to cover 4 new strings method:
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# Chatpter 5: Additional string methods`
	`1`	`+# Chapter 5: Additional string methods`
`2`	`2`
`3`	`3`	`We are going to cover 4 new strings method:`
`4`	`4`