move english translation to new folder

Languages/en/08_InitialValue_en/readme.md

@@ -80,4 +80,4 @@ You can use `getter` function of `public` variables to verify whether the initia
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 ## Tutorial summary
-In this section，We introduce the initial values of variables in `solidity`. When a variable is declared but not assigned, its value defaults to initial value. Different types of variables have different initial values. The `delete` operator can delete value of a variable and replace it with the initial value.
+In this section, We introduce the initial values of variables in `solidity`. When a variable is declared but not assigned, its value defaults to initial value. Different types of variables have different initial values. The `delete` operator can delete value of a variable and replace it with the initial value.