Fix typo

README.md

@@ -23,7 +23,7 @@ The naming convention for migration files are:
 - ...and so on
 
 **Example**
-The first file, `migration/000.000.sql` may look like this:
+The first file, `migrations/000.000.sql` may look like this:
 ```
 create table users (
   name varchar(32) not null,
@@ -31,7 +31,7 @@ create table users (
 );
 ```
 
-The second file, `migration/000.001.sql` may look like this:
+The second file, `migrations/000.001.sql` may look like this:
 ```
 alter table users
 add email varchar(256) not null;