Changing string to text in schema files

examples/flaskr/schema.sql

@@ -1,6 +1,6 @@
 drop table if exists entries;
 create table entries (
   id integer primary key autoincrement,
-  title string not null,
-  text string not null
+  title text not null,
+  text text not null
 );

examples/minitwit/schema.sql

@@ -1,9 +1,9 @@
 drop table if exists user;
 create table user (
   user_id integer primary key autoincrement,
-  username string not null,
-  email string not null,
-  pw_hash string not null
+  username text not null,
+  email text not null,
+  pw_hash text not null
 );
 
 drop table if exists follower;
@@ -16,6 +16,6 @@ drop table if exists message;
 create table message (
   message_id integer primary key autoincrement,
   author_id integer not null,
-  text string not null,
+  text text not null,
   pub_date integer
 );