Fix typo: methed => method

Author: azu

es7/2016-01/2016-01-27.md

@@ -390,7 +390,7 @@ YK: This is the intent; we have to implement it
 
 AWB: what is the hint then?
 
-YK: it is a short-hand methed, vs property contains a function. We have removed this from the current indication, but we have removed it.
+YK: it is a short-hand method, vs property contains a function. We have removed this from the current indication, but we have removed it.
 
 YK: a short-hand method is the same as object literal version