typo-error in csvtojson-v2.md (#311)

changed ignoreColumn and includeColumn to ignoreColumns and includeColumns in code exampls

Author: sanchitbansal10

docs/csvtojson-v2.md

@@ -222,15 +222,15 @@ const jsonArr=await csv().fromFile(myFile);
 
 ```js
 csv({
-  ignoreColumn:["gender","age"]
+  ignoreColumns:["gender","age"]
 })
 ```
 
 **Now**
 
 ```js
 csv({
-  ignoreColumn: /gender|age/
+  ignoreColumns: /gender|age/
 })
 ```