Add en/0.2.8.md syntax highlighting

Author: vcaesar

en/02.8.md

@@ -1,13 +1,13 @@
 # 2.8 Summary
 
 In this chapter, we mainly introduced the 25 Go keywords. Let's review what they are and what they do.
-
+```Go
 	break    default      func    interface    select
 	case     defer        go      map          struct
 	chan     else         goto    package      switch
 	const    fallthrough  if      range        type
 	continue for          import  return       var
-	
+```	
 - `var` and `const` are used to define variables and constants.
 - `package` and `import` are for package use.
 - `func` is used to define functions and methods.